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    <url>
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      <loc>https://www.mathplotai.com/zh/case/altitudes-in-triangles-and-the-orthocenter/ssss7uec</loc>
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      <lastmod>2026-11-04T17:52:29+00:00</lastmod>
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      <lastmod>2026-11-04T19:12:45+00:00</lastmod>
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      <lastmod>2026-11-04T21:02:31+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/coordinates-reflection/ssss7u4z</loc>
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      <loc>https://www.mathplotai.com/zh/case/p2-frame-symmetry-and-parametric-curves-in-dynamic-tiling/ssss7u40</loc>
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      <lastmod>2026-11-04T19:38:35+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/p2-frame-symmetry-and-parametric-curves-in-dynamic-tiling/ssss7u40</loc>
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      <lastmod>2026-11-04T19:38:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/a-square-in-parallel-lines/ssss7u4d</loc>
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      <lastmod>2026-11-04T21:31:18+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/a-square-in-parallel-lines/ssss7u4d</loc>
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      <lastmod>2026-11-04T21:31:18+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exploring-complex-number-roots-with-rotation/ssss7u4f</loc>
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      <lastmod>2026-11-04T14:47:53+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/angles-in-regular-polygons-interior-and-exterior-angle-dynamics/ssss7u48</loc>
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      <loc>https://www.mathplotai.com/zh/case/coin-flipping-2n-times/ssss7ul7</loc>
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      <lastmod>2026-11-04T18:45:17+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/probability-of-intervals-of-normal-distributions/ssss7ul2</loc>
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      <loc>https://www.mathplotai.com/zh/case/perimeter-demo-circumference-square-and-arbitrary-triangle/ssss7ulk</loc>
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      <loc>https://www.mathplotai.com/zh/case/graph-fitting-practice-c/ssss7ulz</loc>
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    <url>
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      <loc>https://www.mathplotai.com/zh/case/reflection-over-parallel-lines-example/ssss7ua9</loc>
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      <loc>https://www.mathplotai.com/en/case/reflection-over-parallel-lines-example/ssss7ua9</loc>
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      <loc>https://www.mathplotai.com/zh/case/exponential-and-logarithmic-functions-graphs-and-properties/ssss7uae</loc>
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      <lastmod>2026-11-04T17:07:56+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exploring-cubic-function-loci/ssss7uaa</loc>
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      <loc>https://www.mathplotai.com/en/case/analysis-of-sine-function-graphs/ssss7uac</loc>
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      <loc>https://www.mathplotai.com/zh/case/interactive-demo-of-triangle-angle-sum/ssss7uck</loc>
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      <loc>https://www.mathplotai.com/en/case/interactive-demo-of-triangle-angle-sum/ssss7uck</loc>
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      <loc>https://www.mathplotai.com/zh/case/normal-to-a-parabola/ssss7uc0</loc>
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      <loc>https://www.mathplotai.com/zh/case/curve-stitching-constructing-a-parabola-from-straight-lines-1/ssss7ucd</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/exploring-rectangle-area-formula/ssss7ucf</loc>
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      <loc>https://www.mathplotai.com/zh/case/normal-distribution-probability-calculation-by-oyunchimegmath/ssss7uc8</loc>
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      <loc>https://www.mathplotai.com/zh/case/approximate-integration-rectangle-trapezoidal-simpson-methods/ssss7ucu</loc>
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      <loc>https://www.mathplotai.com/zh/case/division-algorithm-demonstration-by-sir/ssss7uc5</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/division-algorithm-demonstration-by-sir/ssss7uc5</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/a-symmetry-challenge-v1/ssss7ucb</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/a-symmetry-challenge-v1/ssss7ucb</loc>
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      <lastmod>2026-11-04T15:27:01+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/linear-equations-part-1/ssss7uc3</loc>
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      <loc>https://www.mathplotai.com/en/case/linear-equations-part-1/ssss7uc3</loc>
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      <loc>https://www.mathplotai.com/en/case/eye-spiral/ssss7ucq</loc>
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      <loc>https://www.mathplotai.com/zh/case/volume-and-hyperbola-integral-demonstration/ssss7ur0</loc>
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      <loc>https://www.mathplotai.com/zh/case/trigonometric-ratios-of-rotation-and-reference-angles/ssss7urd</loc>
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      <lastmod>2026-11-04T21:42:28+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/t-distribution-and-standard-normal-distribution/ssss7ur8</loc>
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      <loc>https://www.mathplotai.com/zh/case/geogebra-geometric-construction-cube-and-sphere-volume-comparison/ssss7uru</loc>
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      <loc>https://www.mathplotai.com/en/case/geogebra-geometric-construction-cube-and-sphere-volume-comparison/ssss7uru</loc>
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      <loc>https://www.mathplotai.com/zh/case/linear-inequalities-y-mx-b/ssss7ur5</loc>
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      <loc>https://www.mathplotai.com/en/case/linear-inequalities-y-mx-b/ssss7ur5</loc>
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      <lastmod>2026-11-04T21:53:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/fraction-multiplication-demonstration-by-malin-christersson/ssss7urb</loc>
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      <loc>https://www.mathplotai.com/en/case/fraction-multiplication-demonstration-by-malin-christersson/ssss7urb</loc>
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      <loc>https://www.mathplotai.com/zh/case/3d-plotter-for-implicit-functions-by-roman-chijner/ssss7ur3</loc>
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      <loc>https://www.mathplotai.com/zh/case/translation-exploration-by-ben-graber/ssss7urq</loc>
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      <loc>https://www.mathplotai.com/zh/case/transformation-project-example/ssss7ur1</loc>
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      <loc>https://www.mathplotai.com/en/case/derivative-of-quadratic-function-by-michael-puente/ssss7ut5</loc>
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      <loc>https://www.mathplotai.com/zh/case/fraction-multiplication-in-a-field/ssss7utb</loc>
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      <loc>https://www.mathplotai.com/en/case/fraction-multiplication-in-a-field/ssss7utb</loc>
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      <loc>https://www.mathplotai.com/zh/case/fractions-as-parts-of-circles-by-malin-christersson/ssss7ut3</loc>
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      <loc>https://www.mathplotai.com/en/case/fractions-as-parts-of-circles-by-malin-christersson/ssss7ut3</loc>
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      <loc>https://www.mathplotai.com/zh/case/unit-circle-diagram/ssss7utq</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/unit-circle-diagram/ssss7utq</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/year-zoom-dynamic-demonstration-of-geometry-and-functions/ssss7ut1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/year-zoom-dynamic-demonstration-of-geometry-and-functions/ssss7ut1"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/year-zoom-dynamic-demonstration-of-geometry-and-functions/ssss7ut1"/>
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      <lastmod>2026-11-04T17:14:49+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/year-zoom-dynamic-demonstration-of-geometry-and-functions/ssss7ut1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/year-zoom-dynamic-demonstration-of-geometry-and-functions/ssss7ut1"/>
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      <lastmod>2026-11-04T17:14:49+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/holed-heart-surface/ssss7utm</loc>
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      <lastmod>2026-11-04T17:54:24+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/holed-heart-surface/ssss7utm</loc>
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      <lastmod>2026-11-04T17:54:24+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/mean-and-standard-deviation-by-mikko-rahikka/ssss7utj</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/mean-and-standard-deviation-by-mikko-rahikka/ssss7utj"/>
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      <lastmod>2026-11-04T20:12:12+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/mean-and-standard-deviation-by-mikko-rahikka/ssss7utj</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/mean-and-standard-deviation-by-mikko-rahikka/ssss7utj"/>
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      <lastmod>2026-11-04T20:12:12+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/cube-roots-of-a-complex-number-with-sliders/ssss7utp</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cube-roots-of-a-complex-number-with-sliders/ssss7utp"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/cube-roots-of-a-complex-number-with-sliders/ssss7utp"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/cube-roots-of-a-complex-number-with-sliders/ssss7utp"/>
      <lastmod>2026-11-04T20:21:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/cube-roots-of-a-complex-number-with-sliders/ssss7utp</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cube-roots-of-a-complex-number-with-sliders/ssss7utp"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/cube-roots-of-a-complex-number-with-sliders/ssss7utp"/>
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      <lastmod>2026-11-04T20:21:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/dilating-shapes-with-scale-factor-in-geogebra/ssss7utw</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dilating-shapes-with-scale-factor-in-geogebra/ssss7utw"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/dilating-shapes-with-scale-factor-in-geogebra/ssss7utw"/>
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      <lastmod>2026-11-04T18:29:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/dilating-shapes-with-scale-factor-in-geogebra/ssss7utw</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dilating-shapes-with-scale-factor-in-geogebra/ssss7utw"/>
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      <lastmod>2026-11-04T18:29:35+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/determining-function-invertibility-and-values/ssss7ut6</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/determining-function-invertibility-and-values/ssss7ut6"/>
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      <lastmod>2026-11-04T19:18:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/determining-function-invertibility-and-values/ssss7ut6</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/determining-function-invertibility-and-values/ssss7ut6"/>
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      <lastmod>2026-11-04T19:18:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/reflection-in-the-y-axis-sssssken/ssss7utg</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/reflection-in-the-y-axis-sssssken/ssss7utg"/>
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      <lastmod>2026-11-04T18:16:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/reflection-in-the-y-axis-sssssken/ssss7utg</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/reflection-in-the-y-axis-sssssken/ssss7utg"/>
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      <lastmod>2026-11-04T18:16:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/measuring-pond-width-using-similar-triangles/ssss7ut9</loc>
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      <lastmod>2026-11-04T18:51:04+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/measuring-pond-width-using-similar-triangles/ssss7ut9</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/measuring-pond-width-using-similar-triangles/ssss7ut9"/>
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      <lastmod>2026-11-04T18:51:04+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/parabola-from-spreadsheet/ssss7ute</loc>
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      <lastmod>2026-11-04T20:48:17+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/parabola-from-spreadsheet/ssss7ute</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parabola-from-spreadsheet/ssss7ute"/>
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      <lastmod>2026-11-04T20:48:17+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/circumconic-with-given-center/ssss7utv</loc>
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      <lastmod>2026-11-04T17:41:44+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/circumconic-with-given-center/ssss7utv</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/circumconic-with-given-center/ssss7utv"/>
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      <lastmod>2026-11-04T17:41:44+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/complex-analysis-equations/ssss7ut4</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/complex-analysis-equations/ssss7ut4"/>
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      <lastmod>2026-11-04T21:14:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/complex-analysis-equations/ssss7ut4</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/complex-analysis-equations/ssss7ut4"/>
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      <lastmod>2026-11-04T21:14:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/folding-and-symmetry-lines-in-a-square/ssss7utl</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/folding-and-symmetry-lines-in-a-square/ssss7utl"/>
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      <lastmod>2026-11-04T19:53:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/folding-and-symmetry-lines-in-a-square/ssss7utl</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/folding-and-symmetry-lines-in-a-square/ssss7utl"/>
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      <lastmod>2026-11-04T19:53:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/tessellation-from-triangle-intro/ssss7uty</loc>
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      <lastmod>2026-11-04T21:27:29+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/tessellation-from-triangle-intro/ssss7uty</loc>
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      <lastmod>2026-11-04T21:27:29+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/cosine-transformations-by-jeff-corn/ssss7uir</loc>
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      <loc>https://www.mathplotai.com/zh/case/polygon-to-parallelogram-transformation/ssss7uit</loc>
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      <loc>https://www.mathplotai.com/zh/case/quadrilateral-7-constructing-a-kite/ssss7uix</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/my-pyramid/ssss75nf</loc>
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      <loc>https://www.mathplotai.com/zh/case/zoom-tangent/ssss75n6</loc>
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      <loc>https://www.mathplotai.com/zh/case/exploring-triangle-inequalities-by-stampinpost/ssss75n9</loc>
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      <loc>https://www.mathplotai.com/en/case/exploring-triangle-inequalities-by-stampinpost/ssss75n9</loc>
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      <loc>https://www.mathplotai.com/zh/case/common-denominators-with-rectangles/ssss75ne</loc>
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      <loc>https://www.mathplotai.com/en/case/common-denominators-with-rectangles/ssss75ne</loc>
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      <loc>https://www.mathplotai.com/zh/case/smallest-square-enclosing-a-triangle-by-juan-vicente-s-nchez/ssss75nv</loc>
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      <loc>https://www.mathplotai.com/zh/case/gamma-distribution-interactive-adjust-and-to-see-curve-changes/ssss75n4</loc>
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      <lastmod>2026-11-04T20:38:08+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/perpendicular-bisector-of-a-chord-passes-through-the-center/ssss75nl</loc>
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      <loc>https://www.mathplotai.com/zh/case/football-throw-parabola-and-distance-analysis/ssss7594</loc>
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      <loc>https://www.mathplotai.com/zh/case/dilation-demonstration-by-mike-manley/ssss759l</loc>
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      <loc>https://www.mathplotai.com/zh/case/dynamic-demonstration-of-trapezoid-area-via-rotation/ssss759y</loc>
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      <loc>https://www.mathplotai.com/zh/case/graphing-quadratic-functions-by-sabrina-hochman/ssss759a</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/graphing-quadratic-functions-by-sabrina-hochman/ssss759a"/>
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      <loc>https://www.mathplotai.com/en/case/graphing-quadratic-functions-by-sabrina-hochman/ssss759a</loc>
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      <lastmod>2026-11-04T19:44:00+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/opposite-angles-of-a-cyclic-quadrilateral-by-james-monaghan/ssss759c</loc>
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      <loc>https://www.mathplotai.com/zh/case/demonstration-of-law-of-cosines-with-obtuse-triangle/ssss759r</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/demonstration-of-law-of-cosines-with-obtuse-triangle/ssss759r"/>
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      <loc>https://www.mathplotai.com/en/case/demonstration-of-law-of-cosines-with-obtuse-triangle/ssss759r</loc>
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      <lastmod>2026-11-04T20:36:24+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/central-angles-inscribed-angles-and-their-intercepted-arcs-by-stephanie-stern/ssss759h</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/central-angles-inscribed-angles-and-their-intercepted-arcs-by-stephanie-stern/ssss759h"/>
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      <lastmod>2026-11-04T17:03:22+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/central-angles-inscribed-angles-and-their-intercepted-arcs-by-stephanie-stern/ssss759h</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/central-angles-inscribed-angles-and-their-intercepted-arcs-by-stephanie-stern/ssss759h"/>
      <lastmod>2026-11-04T17:03:22+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/radial-symmetry-puzzle-demonstration/ssss759t</loc>
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      <lastmod>2026-11-05T06:54:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/radial-symmetry-puzzle-demonstration/ssss759t</loc>
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      <lastmod>2026-11-05T06:54:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/proof-without-words-by-steve-phelps-11/ssss759x</loc>
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      <lastmod>2026-11-04T17:32:58+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/proof-without-words-by-steve-phelps-11/ssss759x</loc>
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      <lastmod>2026-11-04T17:32:58+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/quadratic-pyramid-and-net/ssss759i</loc>
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      <lastmod>2026-11-04T18:29:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/quadratic-pyramid-and-net/ssss759i</loc>
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      <lastmod>2026-11-04T18:29:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/bifurcation-diagram-of-logistic-map/ssss759o</loc>
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      <lastmod>2026-11-04T21:42:15+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/bifurcation-diagram-of-logistic-map/ssss759o</loc>
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      <lastmod>2026-11-04T21:42:15+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/normal-curve-with-dynamic-standard-deviation/ssss75es</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/normal-curve-with-dynamic-standard-deviation/ssss75es"/>
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      <lastmod>2026-11-04T15:58:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/normal-curve-with-dynamic-standard-deviation/ssss75es</loc>
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      <lastmod>2026-11-04T15:58:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/symmetric-pentagon-on-square-grid/ssss75e7</loc>
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      <lastmod>2026-11-04T21:53:23+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/symmetric-pentagon-on-square-grid/ssss75e7</loc>
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      <lastmod>2026-11-04T21:53:23+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/simple-tessellation/ssss75en</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/simple-tessellation/ssss75en</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/simple-tessellation/ssss75en"/>
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      <lastmod>2026-11-04T19:20:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/rotation-of-all-platonic-solids/ssss75e2</loc>
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      <lastmod>2026-11-04T21:46:17+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/rotation-of-all-platonic-solids/ssss75e2</loc>
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      <loc>https://www.mathplotai.com/zh/case/square-root-transformation-by-michelle/ssss75ek</loc>
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      <lastmod>2026-11-04T15:33:54+00:00</lastmod>
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      <lastmod>2026-11-04T15:33:54+00:00</lastmod>
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    <url>
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      <loc>https://www.mathplotai.com/zh/case/properties-of-rectangles-by-marcia-cyr/ssss75cz</loc>
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      <loc>https://www.mathplotai.com/zh/case/mr-smith-s-area-of-a-trapezoid/ssss75c0</loc>
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      <loc>https://www.mathplotai.com/zh/case/parallel-lines-skew-lines-by-terry-lee-lindenmuth/ssss75ru</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parallel-lines-skew-lines-by-terry-lee-lindenmuth/ssss75ru"/>
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      <loc>https://www.mathplotai.com/zh/case/triangle-angle-sum-interactive-demonstration/ssss75r5</loc>
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      <loc>https://www.mathplotai.com/en/case/triangle-angle-sum-interactive-demonstration/ssss75r5</loc>
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      <loc>https://www.mathplotai.com/zh/case/area-vs-perimeter-dynamic-demonstration/ssss75rb</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/area-vs-perimeter-dynamic-demonstration/ssss75rb</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/unit-circle-transformations-by-nick-thorpe/ssss75r3</loc>
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      <loc>https://www.mathplotai.com/en/case/unit-circle-transformations-by-nick-thorpe/ssss75r3</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/formula-of-a-parabola/ssss75rq</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/formula-of-a-parabola/ssss75rq</loc>
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      <loc>https://www.mathplotai.com/zh/case/locus-of-the-intersection-point-of-angle-bisectors-by-gilad/ssss75r1</loc>
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      <loc>https://www.mathplotai.com/zh/case/using-iteration-to-find-roots-of-polynomials/ssss75rj</loc>
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      <lastmod>2026-11-04T21:52:56+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/interactive-practice-on-circle-equations-random-target-circle-with-input-verifi/ssss75rp</loc>
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      <lastmod>2026-11-04T17:01:53+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/hyperbola-definition/ssss75rw</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/hyperbola-definition/ssss75rw</loc>
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      <lastmod>2026-11-04T16:28:18+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/nth-roots-of-a-general-complex-number/ssss75r6</loc>
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      <loc>https://www.mathplotai.com/en/case/nth-roots-of-a-general-complex-number/ssss75r6</loc>
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      <lastmod>2026-11-04T14:50:59+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/geogebra-parabolic-trajectory-demo/ssss75rg</loc>
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      <loc>https://www.mathplotai.com/en/case/geogebra-parabolic-trajectory-demo/ssss75rg</loc>
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      <loc>https://www.mathplotai.com/zh/case/demonstration-of-sine-function-limit/ssss75of</loc>
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      <loc>https://www.mathplotai.com/zh/case/point-of-concurrency-of-angle-bisectors-incenter-by-john-sweeney/ssss75o9</loc>
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      <loc>https://www.mathplotai.com/zh/case/vasarely-cubes-sequence-and-circle-geometric-art/ssss75ol</loc>
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      <loc>https://www.mathplotai.com/zh/case/angles-in-the-same-segment-by-misssutton/ssss75or</loc>
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      <loc>https://www.mathplotai.com/zh/case/law-of-cosines-demonstration-by-david-cowan/ssss75ot</loc>
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      <loc>https://www.mathplotai.com/zh/case/sine-and-unit-circle-by-brian-paulson/ssss75ox</loc>
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      <loc>https://www.mathplotai.com/zh/case/pythagorean-theorem-auxiliary-theorem/ssss75oo</loc>
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      <loc>https://www.mathplotai.com/en/case/pythagorean-theorem-auxiliary-theorem/ssss75oo</loc>
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      <loc>https://www.mathplotai.com/zh/case/solving-nonlinear-systems-of-equations-2-variables/ssss7bss</loc>
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      <loc>https://www.mathplotai.com/zh/case/visual-demo-of-fraction-multiplication-by-integer/ssss7bs7</loc>
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      <loc>https://www.mathplotai.com/zh/case/coordinates-of-quadrilaterals/ssss7bsn</loc>
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      <loc>https://www.mathplotai.com/en/case/hyperbola-with-a-circle-locus/ssss7bsk</loc>
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      <loc>https://www.mathplotai.com/zh/case/measuring-angles-using-protractor-interactive-geometry-demo/ssss7bsz</loc>
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      <loc>https://www.mathplotai.com/en/case/measuring-angles-using-protractor-interactive-geometry-demo/ssss7bsz</loc>
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      <lastmod>2026-11-04T20:27:20+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/octagon-loops-exploration/ssss7bs0</loc>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/animation-of-lines-with-square-and-rectangle-by-buhardeen-kansoor-rahman-3/ssss7bsd"/>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/graph-fitting-practice-b/ssss7bsf</loc>
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      <loc>https://www.mathplotai.com/zh/case/derivative-definition-demonstration-by-matte-lena/ssss7bn5</loc>
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      <loc>https://www.mathplotai.com/zh/case/rolling-two-dice-by-sonom/ssss7b2w</loc>
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      <loc>https://www.mathplotai.com/en/case/rolling-two-dice-by-sonom/ssss7b2w</loc>
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      <loc>https://www.mathplotai.com/zh/case/rotation-tessellation-step-8/ssss7b26</loc>
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      <loc>https://www.mathplotai.com/en/case/rotation-tessellation-step-8/ssss7b26</loc>
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      <loc>https://www.mathplotai.com/zh/case/linear-regression-by-jed-butler/ssss7b2g</loc>
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      <loc>https://www.mathplotai.com/en/case/linear-regression-by-jed-butler/ssss7b2g</loc>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/diagonals-of-a-parallelogram-bisect-each-other-by-deepika-jain/ssss7b29"/>
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      <loc>https://www.mathplotai.com/en/case/number-to-words-practice/ssss7b2v</loc>
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      <loc>https://www.mathplotai.com/zh/case/distance-formula/ssss7b24</loc>
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      <loc>https://www.mathplotai.com/en/case/distance-formula/ssss7b24</loc>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/angles-on-parallel-lines-by-alexis-blades/ssss7b2a"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/11-nets-of-the-cube/ssss7b2r"/>
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    <url>
      <loc>https://www.mathplotai.com/en/case/geogebra-geometric-construction-pyramid-and-circle/ssss7b2i</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/geogebra-geometric-construction-pyramid-and-circle/ssss7b2i"/>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/v-pyramid-geometric-model/ssss7b2o</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/v-pyramid-geometric-model/ssss7b2o</loc>
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      <loc>https://www.mathplotai.com/zh/case/equivalent-fractions-visualized-understanding-fraction-equality/ssss7bks</loc>
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      <lastmod>2026-11-04T20:58:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/equivalent-fractions-visualized-understanding-fraction-equality/ssss7bks</loc>
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      <lastmod>2026-11-04T20:58:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/triangle-with-symmetries/ssss7bk7</loc>
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      <lastmod>2026-11-05T07:06:44+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/triangle-with-symmetries/ssss7bk7</loc>
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      <lastmod>2026-11-05T07:06:44+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/intersection-between-a-circle-and-a-line-ii-by-ku-yin-bon-albert/ssss7bkn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-between-a-circle-and-a-line-ii-by-ku-yin-bon-albert/ssss7bkn"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/intersection-between-a-circle-and-a-line-ii-by-ku-yin-bon-albert/ssss7bkn"/>
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      <lastmod>2026-11-04T16:43:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/intersection-between-a-circle-and-a-line-ii-by-ku-yin-bon-albert/ssss7bkn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-between-a-circle-and-a-line-ii-by-ku-yin-bon-albert/ssss7bkn"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/intersection-between-a-circle-and-a-line-ii-by-ku-yin-bon-albert/ssss7bkn"/>
      <lastmod>2026-11-04T16:43:45+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exploring-the-geometric-definition-of-a-parabola/ssss7bk2</loc>
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      <lastmod>2026-11-04T16:05:48+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/exploring-the-geometric-definition-of-a-parabola/ssss7bk2</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-the-geometric-definition-of-a-parabola/ssss7bk2"/>
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      <lastmod>2026-11-04T16:05:48+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/rhs-congruence/ssss7bkk</loc>
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      <lastmod>2026-11-04T15:00:03+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/rhs-congruence/ssss7bkk</loc>
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      <lastmod>2026-11-04T15:00:03+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/quadratic-equation-solver-with-steps-and-graph/ssss7bkz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quadratic-equation-solver-with-steps-and-graph/ssss7bkz"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/quadratic-equation-solver-with-steps-and-graph/ssss7bkz"/>
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      <lastmod>2026-11-04T16:15:57+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/quadratic-equation-solver-with-steps-and-graph/ssss7bkz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quadratic-equation-solver-with-steps-and-graph/ssss7bkz"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/quadratic-equation-solver-with-steps-and-graph/ssss7bkz"/>
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      <lastmod>2026-11-04T16:15:57+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/will-it-hit-the-hoop-4-1-quadratic-functions-and-symmetry/ssss7bk0</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/will-it-hit-the-hoop-4-1-quadratic-functions-and-symmetry/ssss7bk0"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/will-it-hit-the-hoop-4-1-quadratic-functions-and-symmetry/ssss7bk0"/>
      <lastmod>2026-11-04T18:47:56+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/will-it-hit-the-hoop-4-1-quadratic-functions-and-symmetry/ssss7bk0</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/will-it-hit-the-hoop-4-1-quadratic-functions-and-symmetry/ssss7bk0"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/will-it-hit-the-hoop-4-1-quadratic-functions-and-symmetry/ssss7bk0"/>
      <lastmod>2026-11-04T18:47:56+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/shapes-reflected-in-circles/ssss7bkd</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/shapes-reflected-in-circles/ssss7bkd"/>
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      <lastmod>2026-11-04T20:33:36+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/shapes-reflected-in-circles/ssss7bkd</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/shapes-reflected-in-circles/ssss7bkd"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/shapes-reflected-in-circles/ssss7bkd"/>
      <lastmod>2026-11-04T20:33:36+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/adjustable-triangle-with-side-lengths-and-angles/ssss7bkf</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/adjustable-triangle-with-side-lengths-and-angles/ssss7bkf"/>
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      <lastmod>2026-11-04T21:26:52+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/adjustable-triangle-with-side-lengths-and-angles/ssss7bkf</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/adjustable-triangle-with-side-lengths-and-angles/ssss7bkf"/>
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      <lastmod>2026-11-04T21:26:52+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/fraction-graduated-half-line/ssss7bk8</loc>
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      <lastmod>2026-11-04T18:39:12+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/fraction-graduated-half-line/ssss7bk8</loc>
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      <lastmod>2026-11-04T18:39:12+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/complex-number-in-time-space-demonstration/ssss7bku</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/complex-number-in-time-space-demonstration/ssss7bku"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/complex-number-in-time-space-demonstration/ssss7bku"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/complex-number-in-time-space-demonstration/ssss7bku"/>
      <lastmod>2026-11-04T15:48:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/complex-number-in-time-space-demonstration/ssss7bku</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/complex-number-in-time-space-demonstration/ssss7bku"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/complex-number-in-time-space-demonstration/ssss7bku"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/complex-number-in-time-space-demonstration/ssss7bku"/>
      <lastmod>2026-11-04T15:48:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/flight-of-a-bee-parallel-rays/ssss7bk5</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/flight-of-a-bee-parallel-rays/ssss7bk5"/>
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      <lastmod>2026-11-04T19:03:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/flight-of-a-bee-parallel-rays/ssss7bk5</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/flight-of-a-bee-parallel-rays/ssss7bk5"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/flight-of-a-bee-parallel-rays/ssss7bk5"/>
      <lastmod>2026-11-04T19:03:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/graphically-solving-systems-of-inequalities/ssss7bkb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/graphically-solving-systems-of-inequalities/ssss7bkb"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/graphically-solving-systems-of-inequalities/ssss7bkb"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/graphically-solving-systems-of-inequalities/ssss7bkb"/>
      <lastmod>2026-11-05T06:58:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/graphically-solving-systems-of-inequalities/ssss7bkb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/graphically-solving-systems-of-inequalities/ssss7bkb"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/graphically-solving-systems-of-inequalities/ssss7bkb"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/graphically-solving-systems-of-inequalities/ssss7bkb"/>
      <lastmod>2026-11-05T06:58:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/random-dotplot-and-normal-distribution-simulation/ssss7bk3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/random-dotplot-and-normal-distribution-simulation/ssss7bk3"/>
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      <lastmod>2026-11-04T20:28:42+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/random-dotplot-and-normal-distribution-simulation/ssss7bk3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/random-dotplot-and-normal-distribution-simulation/ssss7bk3"/>
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      <lastmod>2026-11-04T20:28:42+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/unwrapping-sine/ssss7bkq</loc>
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      <lastmod>2026-11-04T19:45:56+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/unwrapping-sine/ssss7bkq</loc>
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      <lastmod>2026-11-04T19:45:56+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/area-of-a-rectangle-as-a-function-of-x-by-liza-cross/ssss7bk1</loc>
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      <loc>https://www.mathplotai.com/zh/case/parallel-line-construction-practice-with-feedback/ssss7bkp</loc>
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      <loc>https://www.mathplotai.com/en/case/parallel-line-construction-practice-with-feedback/ssss7bkp</loc>
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      <loc>https://www.mathplotai.com/zh/case/arithmetic-sequence-geometric-visualization-and-summation/ssss7bkw</loc>
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      <loc>https://www.mathplotai.com/zh/case/derivative-definition-demo/ssss7bk6</loc>
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      <loc>https://www.mathplotai.com/zh/case/area-of-a-circle-ii/ssss7bkg</loc>
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      <loc>https://www.mathplotai.com/en/case/area-of-a-circle-ii/ssss7bkg</loc>
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      <loc>https://www.mathplotai.com/zh/case/pythagorean-theorem-demonstration-by-dodorieneken/ssss7bk9</loc>
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      <loc>https://www.mathplotai.com/en/case/planetary-motion-on-an-ellipse/ssss7bke</loc>
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      <loc>https://www.mathplotai.com/zh/case/areas-volumes-culminating-activity/ssss7bk4</loc>
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      <loc>https://www.mathplotai.com/en/case/areas-volumes-culminating-activity/ssss7bk4</loc>
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      <loc>https://www.mathplotai.com/zh/case/cuboid-net-demonstration-by-arthur-lee/ssss7bkl</loc>
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      <lastmod>2026-11-04T20:54:43+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/coordinate-system-and-geometric-transformations/ssss7bka</loc>
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      <loc>https://www.mathplotai.com/en/case/coordinate-system-and-geometric-transformations/ssss7bka</loc>
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      <lastmod>2026-11-04T18:33:39+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/alternate-angles-on-parallel-lines-by-malin-christersson/ssss7bkc</loc>
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      <loc>https://www.mathplotai.com/zh/case/coordinates-of-a-point-after-translation/ssss7bz4</loc>
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      <loc>https://www.mathplotai.com/zh/case/demonstrate-scaling-effects-on-volume/ssss7b0s</loc>
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      <loc>https://www.mathplotai.com/zh/case/geometric-interpretation-of-pearson-s-correlation-coefficient-draft/ssss7bdh</loc>
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      <loc>https://www.mathplotai.com/zh/case/angles-in-a-parallelogram/ssss7bdo</loc>
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      <loc>https://www.mathplotai.com/zh/case/square-and-kite-geometry-demo/ssss7bfs</loc>
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      <loc>https://www.mathplotai.com/en/case/square-and-kite-geometry-demo/ssss7bfs</loc>
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      <loc>https://www.mathplotai.com/zh/case/equations-from-tables/ssss7bf7</loc>
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      <loc>https://www.mathplotai.com/en/case/horizontal-parabola-by-steven-merwin/ssss7bf2</loc>
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      <loc>https://www.mathplotai.com/zh/case/histogram-by-pirsquared/ssss7bfk</loc>
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      <loc>https://www.mathplotai.com/en/case/cone-and-plane-intersection-curve/ssss7bfz</loc>
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      <loc>https://www.mathplotai.com/zh/case/circle-equation-by-wvick/ssss7bfd</loc>
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      <loc>https://www.mathplotai.com/en/case/circle-equation-by-wvick/ssss7bfd</loc>
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      <loc>https://www.mathplotai.com/en/case/describing-variation-graphs-the-graph-of-y-kx/ssss7bff</loc>
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      <loc>https://www.mathplotai.com/en/case/compound-interest-calculation-by-dick-lane/ssss7bf8</loc>
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      <lastmod>2026-11-04T17:18:25+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/rectangle-perimeter-investigation-by-jed-butler-2/ssss7bfu</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rectangle-perimeter-investigation-by-jed-butler-2/ssss7bfu"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rectangle-perimeter-investigation-by-jed-butler-2/ssss7bfu"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/complex-number-visualization-in-polar-form/ssss7bf5"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/converse-of-pythagoras-theorem-interactive-verification/ssss7bfb"/>
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      <loc>https://www.mathplotai.com/en/case/converse-of-pythagoras-theorem-interactive-verification/ssss7bfb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/converse-of-pythagoras-theorem-interactive-verification/ssss7bfb"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/triangle-inequalities-by-marcia-cyr/ssss7bf3"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/triangle-inequalities-by-marcia-cyr/ssss7bf3"/>
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      <loc>https://www.mathplotai.com/en/case/triangle-inequalities-by-marcia-cyr/ssss7bf3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/triangle-inequalities-by-marcia-cyr/ssss7bf3"/>
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      <loc>https://www.mathplotai.com/en/case/hexagonal-prism-cross-sections/ssss7bfq</loc>
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      <lastmod>2026-11-04T16:34:39+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/basic-geometric-construction-with-circles-and-segments/ssss7bf1</loc>
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      <loc>https://www.mathplotai.com/en/case/basic-geometric-construction-with-circles-and-segments/ssss7bf1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/basic-geometric-construction-with-circles-and-segments/ssss7bf1"/>
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      <lastmod>2026-11-05T07:37:47+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sine-rule-alternative-starter-diagram/ssss7bfm"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sine-rule-alternative-starter-diagram/ssss7bfm"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/linear-transformations/ssss7bfp"/>
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      <loc>https://www.mathplotai.com/en/case/binomial-and-normal-approximation/ssss7bfr</loc>
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      <loc>https://www.mathplotai.com/zh/case/similar-triangles-with-missing-lengths-self-check/ssss7b8u</loc>
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      <loc>https://www.mathplotai.com/zh/case/angles-in-parallel-lines-by-miss-j-kirkham/ssss7b85</loc>
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      <lastmod>2026-11-04T16:34:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/visualizing-the-commutative-property-of-multiplication/ssss7b83</loc>
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      <loc>https://www.mathplotai.com/en/case/visualizing-the-commutative-property-of-multiplication/ssss7b83</loc>
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      <loc>https://www.mathplotai.com/zh/case/linear-mapping-visualization/ssss7b8q</loc>
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      <loc>https://www.mathplotai.com/en/case/properties-of-a-rhombus-by-alfred-estberg/ssss7bbb</loc>
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      <loc>https://www.mathplotai.com/en/case/horizontal-stretch-root-function/ssss7bb3</loc>
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      <loc>https://www.mathplotai.com/zh/case/median-invariants/ssss7bbq</loc>
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      <loc>https://www.mathplotai.com/en/case/median-invariants/ssss7bbq</loc>
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      <loc>https://www.mathplotai.com/zh/case/parameterization-with-sine-and-cosine/ssss7bb1</loc>
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      <loc>https://www.mathplotai.com/en/case/parameterization-with-sine-and-cosine/ssss7bb1</loc>
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      <loc>https://www.mathplotai.com/zh/case/proof-of-sine-law-by-david-peterson/ssss7bbm</loc>
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      <lastmod>2026-11-04T20:32:14+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/proof-of-sine-law-by-david-peterson/ssss7bbm</loc>
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      <loc>https://www.mathplotai.com/zh/case/creating-diagrams-of-subsets/ssss7bbj</loc>
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      <loc>https://www.mathplotai.com/en/case/creating-diagrams-of-subsets/ssss7bbj</loc>
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      <lastmod>2026-11-04T16:18:37+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/definition-of-derivative-by-heather/ssss7bbw</loc>
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      <lastmod>2026-11-04T16:18:37+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/geometric-transformations-demo/ssss7bbg</loc>
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      <loc>https://www.mathplotai.com/en/case/geometric-transformations-demo/ssss7bbg</loc>
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      <lastmod>2026-11-04T16:37:27+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/derivatives-of-exponential-functions-by-alvaro-serra/ssss7bby</loc>
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      <loc>https://www.mathplotai.com/en/case/exploring-escher-s-fish-tesselation/ssss7bbc</loc>
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      <loc>https://www.mathplotai.com/zh/case/rectangle-exploration-by-alessa-strelecki-2/ssss7bbr</loc>
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      <loc>https://www.mathplotai.com/en/case/rectangle-exploration-by-alessa-strelecki-2/ssss7bbr</loc>
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      <loc>https://www.mathplotai.com/zh/case/function-graphing-activity/ssss7bbh</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/function-graphing-activity/ssss7bbh</loc>
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      <loc>https://www.mathplotai.com/zh/case/area-of-a-trapezoid-geometric-derivation-and-dynamic-demonstration/ssss7bbt</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/area-of-a-trapezoid-geometric-derivation-and-dynamic-demonstration/ssss7bbt</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/linear-model-function-graph-for-home-size-and-price-approximation/ssss7bbx</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/linear-model-function-graph-for-home-size-and-price-approximation/ssss7bbx"/>
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    <url>
      <loc>https://www.mathplotai.com/en/case/linear-model-function-graph-for-home-size-and-price-approximation/ssss7bbx</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/linear-model-function-graph-for-home-size-and-price-approximation/ssss7bbx"/>
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      <lastmod>2026-11-05T07:32:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/rectangle-properties-investigation-by-adam-antonio/ssss7bbi</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rectangle-properties-investigation-by-adam-antonio/ssss7bbi"/>
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    <url>
      <loc>https://www.mathplotai.com/en/case/rectangle-properties-investigation-by-adam-antonio/ssss7bbi</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/spherical-coordinates-brick-region-demonstration-tool/ssss7bbo</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/spherical-coordinates-brick-region-demonstration-tool/ssss7bbo"/>
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      <lastmod>2026-11-05T06:04:39+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/spherical-coordinates-brick-region-demonstration-tool/ssss7bbo</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/spherical-coordinates-brick-region-demonstration-tool/ssss7bbo"/>
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      <loc>https://www.mathplotai.com/zh/case/parabola-with-secant-and-tangent/ssss7b3s</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/parabola-with-secant-and-tangent/ssss7b3s</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parabola-with-secant-and-tangent/ssss7b3s"/>
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      <lastmod>2026-11-04T15:47:04+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/3d-implicit-surface-grapher-goursat-s-surface/ssss7b37</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/3d-implicit-surface-grapher-goursat-s-surface/ssss7b37"/>
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      <loc>https://www.mathplotai.com/en/case/3d-implicit-surface-grapher-goursat-s-surface/ssss7b37</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/3d-implicit-surface-grapher-goursat-s-surface/ssss7b37"/>
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      <lastmod>2026-11-04T18:13:09+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/magic-point-5-slider-controlled-point-movement-on-segment-ab/ssss7b3n</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/magic-point-5-slider-controlled-point-movement-on-segment-ab/ssss7b3n"/>
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      <lastmod>2026-11-05T07:21:44+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/magic-point-5-slider-controlled-point-movement-on-segment-ab/ssss7b3n</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/magic-point-5-slider-controlled-point-movement-on-segment-ab/ssss7b3n"/>
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      <lastmod>2026-11-05T07:21:44+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/exponential-function-transformations-by-greenmaths-2/ssss7b32</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exponential-function-transformations-by-greenmaths-2/ssss7b32"/>
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      <lastmod>2026-11-04T17:00:30+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/exponential-function-transformations-by-greenmaths-2/ssss7b32</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exponential-function-transformations-by-greenmaths-2/ssss7b32"/>
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      <lastmod>2026-11-04T17:00:30+00:00</lastmod>
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      <lastmod>2026-11-04T21:29:37+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/circle-area-dissection/ssss7b3k</loc>
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      <loc>https://www.mathplotai.com/en/case/random-triangle-generator/ssss7b30</loc>
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      <loc>https://www.mathplotai.com/zh/case/synchronized-induction-and-relative-rotation-in-dynamic-geometry/ssss7b3d</loc>
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      <loc>https://www.mathplotai.com/en/case/synchronized-induction-and-relative-rotation-in-dynamic-geometry/ssss7b3d</loc>
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      <loc>https://www.mathplotai.com/zh/case/sin-x-unit-circle-degrees-by-linda-fahlberg-stojanovska/ssss7b3f</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sin-x-unit-circle-degrees-by-linda-fahlberg-stojanovska/ssss7b3f"/>
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      <loc>https://www.mathplotai.com/zh/case/addition-and-subtraction-on-the-number-line-bouncing-bunny/ssss7b38</loc>
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      <lastmod>2026-11-04T17:22:19+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/addition-and-subtraction-on-the-number-line-bouncing-bunny/ssss7b38</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/addition-and-subtraction-on-the-number-line-bouncing-bunny/ssss7b38"/>
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      <loc>https://www.mathplotai.com/zh/case/6-pyramid-cube-cutouts/ssss7b3u</loc>
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      <lastmod>2026-11-04T19:34:16+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/6-pyramid-cube-cutouts/ssss7b3u</loc>
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      <lastmod>2026-11-04T19:34:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/point-equidistant-from-two-points-perpendicular-bisector/ssss7b35</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/point-equidistant-from-two-points-perpendicular-bisector/ssss7b35"/>
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      <lastmod>2026-11-04T20:48:59+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/point-equidistant-from-two-points-perpendicular-bisector/ssss7b35</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/point-equidistant-from-two-points-perpendicular-bisector/ssss7b35"/>
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      <loc>https://www.mathplotai.com/zh/case/slope-of-a-sine-function/ssss7b3b</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/slope-of-a-sine-function/ssss7b3b</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/slope-of-a-sine-function/ssss7b3b"/>
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      <lastmod>2026-11-04T18:43:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/rotating-grids-and-moir-patterns/ssss7b33</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotating-grids-and-moir-patterns/ssss7b33"/>
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      <lastmod>2026-11-04T15:19:58+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/rotating-grids-and-moir-patterns/ssss7b33</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotating-grids-and-moir-patterns/ssss7b33"/>
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      <lastmod>2026-11-04T15:19:58+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/rotating-cube-by-malin-christersson/ssss7b3q</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotating-cube-by-malin-christersson/ssss7b3q"/>
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      <lastmod>2026-11-04T20:37:19+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/rotating-cube-by-malin-christersson/ssss7b3q</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotating-cube-by-malin-christersson/ssss7b3q"/>
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      <lastmod>2026-11-04T20:37:19+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/graphing-parabolas-by-andrew-kerr/ssss7b31</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/graphing-parabolas-by-andrew-kerr/ssss7b31"/>
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      <lastmod>2026-11-04T21:22:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/graphing-parabolas-by-andrew-kerr/ssss7b31</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/graphing-parabolas-by-andrew-kerr/ssss7b31"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/graphing-parabolas-by-andrew-kerr/ssss7b31"/>
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      <lastmod>2026-11-04T21:22:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/68-95-99-7-rule-practice/ssss7b3m</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/68-95-99-7-rule-practice/ssss7b3m"/>
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      <lastmod>2026-11-04T18:04:10+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/68-95-99-7-rule-practice/ssss7b3m</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/68-95-99-7-rule-practice/ssss7b3m"/>
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      <lastmod>2026-11-04T18:04:10+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/logarithms-practice-1/ssss7b3j</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/logarithms-practice-1/ssss7b3j"/>
      <lastmod>2026-11-04T17:35:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/logarithms-practice-1/ssss7b3j</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/logarithms-practice-1/ssss7b3j"/>
      <lastmod>2026-11-04T17:35:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/optimizing-the-volume-of-a-box/ssss7b3p</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/optimizing-the-volume-of-a-box/ssss7b3p"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/optimizing-the-volume-of-a-box/ssss7b3p"/>
      <lastmod>2026-11-04T17:51:08+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/optimizing-the-volume-of-a-box/ssss7b3p</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/optimizing-the-volume-of-a-box/ssss7b3p"/>
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      <lastmod>2026-11-04T17:51:08+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/dilation-and-inverse-function/ssss7b3w</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dilation-and-inverse-function/ssss7b3w"/>
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      <lastmod>2026-11-04T17:48:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/dilation-and-inverse-function/ssss7b3w</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/dilation-and-inverse-function/ssss7b3w"/>
      <lastmod>2026-11-04T17:48:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/cosine-rule-find-an-angle/ssss7b36</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cosine-rule-find-an-angle/ssss7b36"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/cosine-rule-find-an-angle/ssss7b36"/>
      <lastmod>2026-11-04T21:55:22+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/cosine-rule-find-an-angle/ssss7b36</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cosine-rule-find-an-angle/ssss7b36"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/cosine-rule-find-an-angle/ssss7b36"/>
      <lastmod>2026-11-04T21:55:22+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/interactive-conic-sections-general-form-grapher/ssss7b3g</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/interactive-conic-sections-general-form-grapher/ssss7b3g"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/interactive-conic-sections-general-form-grapher/ssss7b3g"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/interactive-conic-sections-general-form-grapher/ssss7b3g"/>
      <lastmod>2026-11-04T16:39:37+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/interactive-conic-sections-general-form-grapher/ssss7b3g</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/interactive-conic-sections-general-form-grapher/ssss7b3g"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/interactive-conic-sections-general-form-grapher/ssss7b3g"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/interactive-conic-sections-general-form-grapher/ssss7b3g"/>
      <lastmod>2026-11-04T16:39:37+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/lissajou-curve/ssss7b39"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/lissajou-curve/ssss7b39"/>
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      <lastmod>2026-11-04T20:39:29+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/relation-between-angles-formed-at-centre-and-perimeter-of-circle/ssss7bqk</loc>
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      <lastmod>2026-11-04T14:43:40+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/properties-of-a-parallelogram-by-michael-petre/ssss7bqz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/properties-of-a-parallelogram-by-michael-petre/ssss7bqz"/>
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      <loc>https://www.mathplotai.com/zh/case/cone-volume-by-ashar-arabi/ssss7bq0</loc>
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      <loc>https://www.mathplotai.com/en/case/cone-volume-by-ashar-arabi/ssss7bq0</loc>
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      <loc>https://www.mathplotai.com/zh/case/lumpy-torus-and-its-sublevel-sets/ssss7bqd</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/lumpy-torus-and-its-sublevel-sets/ssss7bqd</loc>
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      <lastmod>2026-11-04T17:15:16+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/p3m1-kaleidoscope-60/ssss7bqf</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/p3m1-kaleidoscope-60/ssss7bqf</loc>
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      <lastmod>2026-11-04T19:29:02+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/or-logic-gate-demonstration/ssss7bq8</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/or-logic-gate-demonstration/ssss7bq8</loc>
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      <lastmod>2026-11-04T21:33:31+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/slider-controlled-point-between-a-and-b/ssss7bqu</loc>
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      <lastmod>2026-11-05T07:18:56+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/slider-controlled-point-between-a-and-b/ssss7bqu</loc>
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      <lastmod>2026-11-05T07:18:56+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/simple-trigonometric-ratios/ssss7bq5</loc>
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      <lastmod>2026-11-04T21:43:09+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/simple-trigonometric-ratios/ssss7bq5</loc>
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      <lastmod>2026-11-04T21:43:09+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/angles-in-parallelograms/ssss7bqb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/angles-in-parallelograms/ssss7bqb"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/angles-in-parallelograms/ssss7bqb"/>
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      <lastmod>2026-11-04T20:33:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/angles-in-parallelograms/ssss7bqb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/angles-in-parallelograms/ssss7bqb"/>
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      <lastmod>2026-11-04T20:33:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/translation-in-the-direction-of-the-x-axis/ssss7bq3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/translation-in-the-direction-of-the-x-axis/ssss7bq3"/>
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      <lastmod>2026-11-04T16:34:01+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/translation-in-the-direction-of-the-x-axis/ssss7bq3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/translation-in-the-direction-of-the-x-axis/ssss7bq3"/>
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      <lastmod>2026-11-04T16:34:01+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/exploring-ssa-for-triangle-congruence-by-ted-coe/ssss7bqq</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-ssa-for-triangle-congruence-by-ted-coe/ssss7bqq"/>
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      <lastmod>2026-11-04T19:49:02+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/exploring-ssa-for-triangle-congruence-by-ted-coe/ssss7bqq</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-ssa-for-triangle-congruence-by-ted-coe/ssss7bqq"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/exploring-ssa-for-triangle-congruence-by-ted-coe/ssss7bqq"/>
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      <lastmod>2026-11-04T19:49:02+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/vertically-opposite-angles-demo/ssss7bq1</loc>
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      <lastmod>2026-11-04T21:42:08+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/vertically-opposite-angles-demo/ssss7bq1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/vertically-opposite-angles-demo/ssss7bq1"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/vertically-opposite-angles-demo/ssss7bq1"/>
      <lastmod>2026-11-04T21:42:08+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/hyperbola-lab-by-nischal-thapa/ssss7bqm</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-lab-by-nischal-thapa/ssss7bqm"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/hyperbola-lab-by-nischal-thapa/ssss7bqm"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/hyperbola-lab-by-nischal-thapa/ssss7bqm"/>
      <lastmod>2026-11-04T16:15:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/hyperbola-lab-by-nischal-thapa/ssss7bqm</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-lab-by-nischal-thapa/ssss7bqm"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/hyperbola-lab-by-nischal-thapa/ssss7bqm"/>
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      <lastmod>2026-11-04T16:15:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/10a-2i-dynamic-geometry-with-rotation-and-secant-lines/ssss7bqj</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/10a-2i-dynamic-geometry-with-rotation-and-secant-lines/ssss7bqj"/>
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      <lastmod>2026-11-04T16:47:18+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/10a-2i-dynamic-geometry-with-rotation-and-secant-lines/ssss7bqj</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/10a-2i-dynamic-geometry-with-rotation-and-secant-lines/ssss7bqj"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/10a-2i-dynamic-geometry-with-rotation-and-secant-lines/ssss7bqj"/>
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      <lastmod>2026-11-04T16:47:18+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/solving-linear-equations-with-2-variables-by-mrrichardson/ssss7bqp</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/solving-linear-equations-with-2-variables-by-mrrichardson/ssss7bqp"/>
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      <lastmod>2026-11-04T19:42:15+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/solving-linear-equations-with-2-variables-by-mrrichardson/ssss7bqp</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/solving-linear-equations-with-2-variables-by-mrrichardson/ssss7bqp"/>
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      <lastmod>2026-11-04T19:42:15+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/exploring-angle-properties/ssss7bqw</loc>
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      <lastmod>2026-11-04T17:37:40+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/exploring-angle-properties/ssss7bqw</loc>
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      <loc>https://www.mathplotai.com/zh/case/quadrilateral-interior-exterior-angle-sum-theorems-v2/ssss7bqh</loc>
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      <loc>https://www.mathplotai.com/en/case/linear-functions-changing-m-and-b/ssss7b12</loc>
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      <loc>https://www.mathplotai.com/zh/case/basic-solution-of-linear-equations-with-fractions/ssss7b1k</loc>
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      <loc>https://www.mathplotai.com/zh/case/diagonals-of-a-rhombus-by-neal-creeden/ssss7b1z</loc>
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      <loc>https://www.mathplotai.com/zh/case/billiard-trajectory-on-trapezoidal-table/ssss7b10</loc>
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      <lastmod>2026-11-04T20:56:22+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/quadratic-curves-and-equations-set-2/ssss7b1d</loc>
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      <lastmod>2026-11-04T21:10:09+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/limit-example-7-two-sides-to-a-limit/ssss7b18</loc>
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      <loc>https://www.mathplotai.com/zh/case/function-transformation-and-graphing/ssss7b1u</loc>
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      <loc>https://www.mathplotai.com/zh/case/spherical-lines-angles-between-great-circles/ssss7b15</loc>
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      <loc>https://www.mathplotai.com/en/case/spherical-lines-angles-between-great-circles/ssss7b15</loc>
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      <loc>https://www.mathplotai.com/zh/case/shearing-a-triangle-and-a-parallelogram/ssss7b1b</loc>
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      <lastmod>2026-11-04T08:47:53+00:00</lastmod>
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      <lastmod>2026-11-04T20:15:55+00:00</lastmod>
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      <lastmod>2026-11-04T20:15:55+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/triangle-dilation-exploring-area-and-shape-changes/ssss7bjw</loc>
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      <lastmod>2026-11-04T21:14:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/statistics-and-probability-calculator-with-geogebra/ssss7bj9</loc>
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      <lastmod>2026-11-04T19:07:25+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/statistics-and-probability-calculator-with-geogebra/ssss7bj9</loc>
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      <lastmod>2026-11-04T19:07:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/gradient-of-curves/ssss7bje</loc>
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      <lastmod>2026-11-04T21:04:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/gradient-of-curves/ssss7bje</loc>
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      <lastmod>2026-11-04T21:04:35+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/tessellation-from-rectangle-step-1/ssss7bjv</loc>
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      <lastmod>2026-11-04T21:27:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/tessellation-from-rectangle-step-1/ssss7bjv</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/tessellation-from-rectangle-step-1/ssss7bjv"/>
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      <lastmod>2026-11-04T21:27:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/normal-cumulative-density-function/ssss7bj4</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/normal-cumulative-density-function/ssss7bj4</loc>
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      <lastmod>2026-11-04T17:20:17+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exponential-function-of-e-visualization/ssss7bjl</loc>
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      <lastmod>2026-11-04T21:49:19+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/exponential-function-of-e-visualization/ssss7bjl</loc>
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      <loc>https://www.mathplotai.com/zh/case/drawing-a-tangent-line-to-a-curve-case-1/ssss7bjy</loc>
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      <loc>https://www.mathplotai.com/zh/case/proof-without-words-pythagorean-theorem-via-drag-and-slider/ssss7bgf</loc>
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      <loc>https://www.mathplotai.com/zh/case/construction-of-a-rhombus-by-elijones1/ssss7bgt</loc>
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      <loc>https://www.mathplotai.com/en/case/construction-of-a-rhombus-by-elijones1/ssss7bgt</loc>
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      <loc>https://www.mathplotai.com/zh/case/the-central-cevian-complement-of-the-incenter-and-the-excentral-triangle/ssss7bgx</loc>
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      <loc>https://www.mathplotai.com/zh/case/simple-harmonic-motion-derivation/ssss7bgi</loc>
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      <loc>https://www.mathplotai.com/en/case/simple-harmonic-motion-derivation/ssss7bgi</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/supplementary-angles-interactive-geometric-construction/ssss7bgo</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/supplementary-angles-interactive-geometric-construction/ssss7bgo</loc>
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      <loc>https://www.mathplotai.com/zh/case/rotation-exploration-of-butterflies-windmills-and-wallpaper/ssss7b9s</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotation-exploration-of-butterflies-windmills-and-wallpaper/ssss7b9s"/>
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      <loc>https://www.mathplotai.com/en/case/rotation-exploration-of-butterflies-windmills-and-wallpaper/ssss7b9s</loc>
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      <loc>https://www.mathplotai.com/zh/case/creating-a-histogram-from-a-table-in-geogebra/ssss7b97</loc>
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      <loc>https://www.mathplotai.com/en/case/creating-a-histogram-from-a-table-in-geogebra/ssss7b97</loc>
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      <loc>https://www.mathplotai.com/zh/case/inverse-square-root/ssss7b9n</loc>
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      <loc>https://www.mathplotai.com/en/case/inverse-square-root/ssss7b9n</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/points-in-triangle-centroid-construction/ssss7b92</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/points-in-triangle-centroid-construction/ssss7b92</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/pyramid-and-net-construction/ssss7b9k</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/pyramid-and-net-construction/ssss7b9k</loc>
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      <lastmod>2026-11-04T17:21:38+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/similar-triangles-proving-abc-def-and-finding-length-df/ssss7b9z</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/similar-triangles-proving-abc-def-and-finding-length-df/ssss7b9z"/>
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    <url>
      <loc>https://www.mathplotai.com/en/case/similar-triangles-proving-abc-def-and-finding-length-df/ssss7b9z</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/similar-triangles-proving-abc-def-and-finding-length-df/ssss7b9z"/>
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      <lastmod>2026-11-05T06:20:00+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/pmc-2014-2015-q4/ssss7b90</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/pmc-2014-2015-q4/ssss7b90"/>
      <lastmod>2026-11-04T18:49:50+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/pmc-2014-2015-q4/ssss7b90</loc>
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      <lastmod>2026-11-04T18:49:50+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/angle-addition-postulate-geometric-construction-and-trigonometry/ssss7b9d</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/angle-addition-postulate-geometric-construction-and-trigonometry/ssss7b9d"/>
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      <lastmod>2026-11-04T15:42:59+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/angle-addition-postulate-geometric-construction-and-trigonometry/ssss7b9d</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/angle-addition-postulate-geometric-construction-and-trigonometry/ssss7b9d"/>
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      <lastmod>2026-11-04T15:42:59+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/matrix-powers-and-eigenvectors-iterating-a-linear-transformation/ssss7b9f</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/matrix-powers-and-eigenvectors-iterating-a-linear-transformation/ssss7b9f"/>
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      <lastmod>2026-11-04T15:24:13+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/matrix-powers-and-eigenvectors-iterating-a-linear-transformation/ssss7b9f</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/matrix-powers-and-eigenvectors-iterating-a-linear-transformation/ssss7b9f"/>
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      <lastmod>2026-11-04T15:24:13+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/projectile-motion-of-a-bag/ssss7b98</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/projectile-motion-of-a-bag/ssss7b98</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/projectile-motion-of-a-bag/ssss7b98"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/projectile-motion-of-a-bag/ssss7b98"/>
      <lastmod>2026-11-04T18:01:12+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/approximating-area-under-a-curve-by-mrquinn/ssss7b9u</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/approximating-area-under-a-curve-by-mrquinn/ssss7b9u"/>
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      <loc>https://www.mathplotai.com/en/case/approximating-area-under-a-curve-by-mrquinn/ssss7b9u</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/approximating-area-under-a-curve-by-mrquinn/ssss7b9u"/>
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      <lastmod>2026-11-04T17:49:43+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/sine-values-and-nested-triangles/ssss7b95</loc>
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      <loc>https://www.mathplotai.com/en/case/sine-values-and-nested-triangles/ssss7b95</loc>
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      <lastmod>2026-11-04T21:05:39+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/complex-multiplication-game/ssss7bec</loc>
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      <loc>https://www.mathplotai.com/en/case/complex-multiplication-game/ssss7bec</loc>
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      <loc>https://www.mathplotai.com/en/case/unrolling-circle/ssss7bex</loc>
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      <loc>https://www.mathplotai.com/en/case/missing-angle-in-a-triangle/ssss7beo</loc>
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      <loc>https://www.mathplotai.com/zh/case/animated-decomposition-of-the-rhombic-dodecahedron/ssss7bv7</loc>
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      <loc>https://www.mathplotai.com/zh/case/feynman-path-reflection-demo/ssss7bv2</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/feynman-path-reflection-demo/ssss7bv2</loc>
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      <loc>https://www.mathplotai.com/zh/case/height-calculation/ssss7bvk</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/height-calculation/ssss7bvk</loc>
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      <loc>https://www.mathplotai.com/zh/case/histograms-and-boxplots/ssss7bvv</loc>
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      <loc>https://www.mathplotai.com/en/case/histograms-and-boxplots/ssss7bvv</loc>
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      <loc>https://www.mathplotai.com/zh/case/estimating-the-volume-of-the-goodyear-blimp/ssss7bv4</loc>
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      <lastmod>2026-11-04T17:06:56+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/determine-similarity-of-triangles/ssss7bvl</loc>
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      <loc>https://www.mathplotai.com/en/case/determine-similarity-of-triangles/ssss7bvl</loc>
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      <loc>https://www.mathplotai.com/zh/case/area-of-a-parallelogram-by-edward-knote/ssss7bvy</loc>
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      <loc>https://www.mathplotai.com/en/case/area-of-a-parallelogram-by-edward-knote/ssss7bvy</loc>
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      <lastmod>2026-11-04T21:25:05+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/the-converse-of-pythagoras-theorem/ssss7bva</loc>
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      <lastmod>2026-11-04T21:47:41+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/the-converse-of-pythagoras-theorem/ssss7bva</loc>
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      <lastmod>2026-11-04T21:47:41+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/implicit-differentiation-of-descartes-leaf/ssss7bvc</loc>
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      <lastmod>2026-11-04T17:32:24+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/implicit-differentiation-of-descartes-leaf/ssss7bvc</loc>
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      <lastmod>2026-11-04T17:32:24+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/left-and-right-riemann-sums-visualization/ssss7bvr</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/left-and-right-riemann-sums-visualization/ssss7bvr"/>
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      <lastmod>2026-11-04T20:13:54+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/left-and-right-riemann-sums-visualization/ssss7bvr</loc>
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      <lastmod>2026-11-04T20:13:54+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/geometric-tiling-pythagorean-theorem-and-circle-intersection/ssss7bvh</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/geometric-tiling-pythagorean-theorem-and-circle-intersection/ssss7bvh"/>
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      <lastmod>2026-11-04T17:51:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/geometric-tiling-pythagorean-theorem-and-circle-intersection/ssss7bvh</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/geometric-tiling-pythagorean-theorem-and-circle-intersection/ssss7bvh"/>
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      <lastmod>2026-11-04T17:51:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/nets-of-pyramids/ssss7bvt</loc>
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      <lastmod>2026-11-04T21:48:12+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/nets-of-pyramids/ssss7bvt</loc>
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      <lastmod>2026-11-04T21:48:12+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/intersection-of-a-prism-and-a-plane/ssss7bvx</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-of-a-prism-and-a-plane/ssss7bvx"/>
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      <lastmod>2026-11-04T16:33:50+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/intersection-of-a-prism-and-a-plane/ssss7bvx</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-of-a-prism-and-a-plane/ssss7bvx"/>
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      <lastmod>2026-11-04T16:33:50+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/sum-of-angles-in-a-triangle-by-greenmaths/ssss7bvi</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sum-of-angles-in-a-triangle-by-greenmaths/ssss7bvi"/>
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      <lastmod>2026-11-04T21:48:26+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/sum-of-angles-in-a-triangle-by-greenmaths/ssss7bvi</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sum-of-angles-in-a-triangle-by-greenmaths/ssss7bvi"/>
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      <lastmod>2026-11-04T21:48:26+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/parallel-lines-and-transversal-angles-by-misslinares/ssss7bvo</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parallel-lines-and-transversal-angles-by-misslinares/ssss7bvo"/>
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      <lastmod>2026-11-04T21:35:33+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/parallel-lines-and-transversal-angles-by-misslinares/ssss7bvo</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parallel-lines-and-transversal-angles-by-misslinares/ssss7bvo"/>
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      <lastmod>2026-11-04T21:35:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/the-derivative-of-f-x-sinx/ssss7b4s</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/the-derivative-of-f-x-sinx/ssss7b4s"/>
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      <lastmod>2026-11-04T18:26:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/the-derivative-of-f-x-sinx/ssss7b4s</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/the-derivative-of-f-x-sinx/ssss7b4s"/>
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      <lastmod>2026-11-04T18:26:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/tetrahedron-ruled-surface/ssss7b47</loc>
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      <lastmod>2026-11-04T19:09:56+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/tetrahedron-ruled-surface/ssss7b47</loc>
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      <lastmod>2026-11-04T19:09:56+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/trisecting-the-cube-into-3-pyramids/ssss7b4n"/>
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      <lastmod>2026-11-04T18:47:08+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/ellipse-and-circle-geometry-relationship/ssss7b4k</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/ellipse-and-circle-geometry-relationship/ssss7b4k</loc>
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      <loc>https://www.mathplotai.com/zh/case/trig-functions-of-special-angles-on-the-unit-circle/ssss7b4z</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/trig-functions-of-special-angles-on-the-unit-circle/ssss7b4z"/>
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      <loc>https://www.mathplotai.com/en/case/trig-functions-of-special-angles-on-the-unit-circle/ssss7b4z</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/trig-functions-of-special-angles-on-the-unit-circle/ssss7b4z"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/trig-functions-of-special-angles-on-the-unit-circle/ssss7b4z"/>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/mid-segments-of-a-triangle/ssss7b40</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/mid-segments-of-a-triangle/ssss7b40</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/normal-probability-plot/ssss7b4d</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/normal-probability-plot/ssss7b4d</loc>
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      <lastmod>2026-11-04T17:48:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/periscope-reflection-observing-birds-via-reflection/ssss7b4f</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/periscope-reflection-observing-birds-via-reflection/ssss7b4f"/>
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      <loc>https://www.mathplotai.com/en/case/periscope-reflection-observing-birds-via-reflection/ssss7b4f</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/periscope-reflection-observing-birds-via-reflection/ssss7b4f"/>
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      <loc>https://www.mathplotai.com/zh/case/probability-of-existence-of-a-rectangle/ssss7b48</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/probability-of-existence-of-a-rectangle/ssss7b48"/>
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      <lastmod>2026-11-04T17:25:02+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/probability-of-existence-of-a-rectangle/ssss7b48</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/probability-of-existence-of-a-rectangle/ssss7b48"/>
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      <lastmod>2026-11-04T17:25:02+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/transforming-linear-functions-by-valerie-higgins/ssss7b4u</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/transforming-linear-functions-by-valerie-higgins/ssss7b4u"/>
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      <lastmod>2026-11-04T18:07:23+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/transforming-linear-functions-by-valerie-higgins/ssss7b4u</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/transforming-linear-functions-by-valerie-higgins/ssss7b4u"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/transforming-linear-functions-by-valerie-higgins/ssss7b4u"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/transforming-linear-functions-by-valerie-higgins/ssss7b4u"/>
      <lastmod>2026-11-04T18:07:23+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/hyperbola-lab-by-1067752/ssss7b45</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-lab-by-1067752/ssss7b45"/>
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      <lastmod>2026-11-04T17:11:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/hyperbola-lab-by-1067752/ssss7b45</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-lab-by-1067752/ssss7b45"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/hyperbola-lab-by-1067752/ssss7b45"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/hyperbola-lab-by-1067752/ssss7b45"/>
      <lastmod>2026-11-04T17:11:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/translation-tessellation-5/ssss7b4b</loc>
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      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/translation-tessellation-5/ssss7b4b"/>
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      <lastmod>2026-11-04T21:21:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/translation-tessellation-5/ssss7b4b</loc>
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      <lastmod>2026-11-04T21:21:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/napier-s-bones-demonstration/ssss7b43</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/napier-s-bones-demonstration/ssss7b43"/>
      <lastmod>2026-11-04T18:47:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/napier-s-bones-demonstration/ssss7b43</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/napier-s-bones-demonstration/ssss7b43"/>
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      <lastmod>2026-11-04T18:47:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/reflection-find-the-mirror-line/ssss7b4q</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/reflection-find-the-mirror-line/ssss7b4q"/>
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      <lastmod>2026-11-04T18:16:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/reflection-find-the-mirror-line/ssss7b4q</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/reflection-find-the-mirror-line/ssss7b4q"/>
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      <lastmod>2026-11-04T18:16:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/intersection-of-two-planes-by-linda-fahlberg-stojanovska/ssss7b41</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-of-two-planes-by-linda-fahlberg-stojanovska/ssss7b41"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/intersection-of-two-planes-by-linda-fahlberg-stojanovska/ssss7b41"/>
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      <lastmod>2026-11-04T18:35:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/intersection-of-two-planes-by-linda-fahlberg-stojanovska/ssss7b41</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-of-two-planes-by-linda-fahlberg-stojanovska/ssss7b41"/>
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      <lastmod>2026-11-04T18:35:46+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/angle-pairs-demo/ssss7b4m</loc>
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      <lastmod>2026-11-04T18:49:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/angle-pairs-demo/ssss7b4m</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/angle-pairs-demo/ssss7b4m"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/angle-pairs-demo/ssss7b4m"/>
      <lastmod>2026-11-04T18:49:07+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/piecewise-functions-continuity-differentiability/ssss7b4j</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/piecewise-functions-continuity-differentiability/ssss7b4j"/>
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      <lastmod>2026-11-04T15:54:54+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/piecewise-functions-continuity-differentiability/ssss7b4j</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/piecewise-functions-continuity-differentiability/ssss7b4j"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/piecewise-functions-continuity-differentiability/ssss7b4j"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/piecewise-functions-continuity-differentiability/ssss7b4j"/>
      <lastmod>2026-11-04T15:54:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/sector-to-cone-lateral-area-by-alfred-estberg/ssss7b4p</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sector-to-cone-lateral-area-by-alfred-estberg/ssss7b4p"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/sector-to-cone-lateral-area-by-alfred-estberg/ssss7b4p"/>
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      <lastmod>2026-11-04T16:44:35+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sector-to-cone-lateral-area-by-alfred-estberg/ssss7b4p"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/sector-to-cone-lateral-area-by-alfred-estberg/ssss7b4p"/>
      <lastmod>2026-11-04T16:44:35+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/weaving-pattern-dynamic-construction-of-isosceles-triangles-via-reflection-and/ssss7b4w"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/weaving-pattern-dynamic-construction-of-isosceles-triangles-via-reflection-and/ssss7b4w"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/weaving-pattern-dynamic-construction-of-isosceles-triangles-via-reflection-and/ssss7b4w"/>
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      <lastmod>2026-11-04T09:51:36+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/bar-chart-construction/ssss7blk</loc>
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      <loc>https://www.mathplotai.com/zh/case/ellipse-construction-by-bryan-anderson/ssss7blz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/ellipse-construction-by-bryan-anderson/ssss7blz"/>
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      <loc>https://www.mathplotai.com/en/case/ellipse-construction-by-bryan-anderson/ssss7blz</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/vasarely-s-ara-inspiration/ssss7bl0</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/water-wheel-problem/ssss7bld</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/water-wheel-problem/ssss7bld</loc>
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      <loc>https://www.mathplotai.com/zh/case/interactive-coordinate-point-plotting-practice-v2/ssss7blf</loc>
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      <loc>https://www.mathplotai.com/zh/case/logarithmic-equation-solving-example-solve-log-5-x-20-2/ssss7bl8</loc>
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      <loc>https://www.mathplotai.com/zh/case/measuring-equiangular-spirals-in-nature/ssss7blu</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/missing-square-dissection/ssss7bl5</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/missing-square-dissection/ssss7bl5</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/missing-square-dissection/ssss7bl5"/>
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      <lastmod>2026-11-04T21:34:11+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exploring-domain-range-asymptote-and-end-behavior-of-exponential-function-f-x/ssss7blb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-domain-range-asymptote-and-end-behavior-of-exponential-function-f-x/ssss7blb"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/exploring-domain-range-asymptote-and-end-behavior-of-exponential-function-f-x/ssss7blb"/>
      <lastmod>2026-11-04T19:57:59+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/exploring-domain-range-asymptote-and-end-behavior-of-exponential-function-f-x/ssss7blb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-domain-range-asymptote-and-end-behavior-of-exponential-function-f-x/ssss7blb"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/exploring-domain-range-asymptote-and-end-behavior-of-exponential-function-f-x/ssss7blb"/>
      <lastmod>2026-11-04T19:57:59+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/corresponding-angles-for-parallel-lines/ssss7bl3</loc>
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      <lastmod>2026-11-04T17:56:23+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/corresponding-angles-for-parallel-lines/ssss7bl3</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/first-and-second-derivatives/ssss7blq</loc>
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      <lastmod>2026-11-04T16:33:41+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/first-and-second-derivatives/ssss7blq</loc>
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      <lastmod>2026-11-04T16:33:41+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cone-cross-sections-by-marcinek-tibor/ssss7bl1"/>
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      <lastmod>2026-11-04T17:14:18+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/cone-cross-sections-by-marcinek-tibor/ssss7bl1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cone-cross-sections-by-marcinek-tibor/ssss7bl1"/>
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      <lastmod>2026-11-04T17:14:18+00:00</lastmod>
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      <lastmod>2026-11-04T19:17:08+00:00</lastmod>
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      <lastmod>2026-11-04T19:17:08+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/tangent-function-dynamic-exploration/ssss7bl4</loc>
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    <url>
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      <loc>https://www.mathplotai.com/en/case/quartic-function-s-derivative-graph/ssss7blr</loc>
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      <loc>https://www.mathplotai.com/zh/case/square-area-and-perimeter-calculator/ssss7blt</loc>
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      <loc>https://www.mathplotai.com/en/case/square-area-and-perimeter-calculator/ssss7blt</loc>
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      <loc>https://www.mathplotai.com/zh/case/logarithmic-functions-comparison/ssss7by8</loc>
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      <loc>https://www.mathplotai.com/zh/case/normal-and-t-distribution/ssss7byb</loc>
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      <loc>https://www.mathplotai.com/zh/case/slider-controlled-point-movement-on-segment-ab/ssss7bay</loc>
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      <loc>https://www.mathplotai.com/en/case/slider-controlled-point-movement-on-segment-ab/ssss7bay</loc>
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      <loc>https://www.mathplotai.com/en/case/zero-correlation-triangle/ssss7br8</loc>
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      <loc>https://www.mathplotai.com/zh/case/estimate-circle-area-using-hexagon/ssss7bru</loc>
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      <loc>https://www.mathplotai.com/en/case/estimate-circle-area-using-hexagon/ssss7bru</loc>
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      <loc>https://www.mathplotai.com/zh/case/rotational-symmetry-demo-by-zack-patterson-2/ssss7br5</loc>
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      <loc>https://www.mathplotai.com/en/case/rotational-symmetry-demo-by-zack-patterson-2/ssss7br5</loc>
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      <loc>https://www.mathplotai.com/zh/case/triangle-tessellation-with-gaps/ssss7brb</loc>
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      <loc>https://www.mathplotai.com/en/case/triangle-tessellation-with-gaps/ssss7brb</loc>
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      <loc>https://www.mathplotai.com/zh/case/definition-of-complementary-angles-dynamic-geometric-construction/ssss7br3</loc>
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      <loc>https://www.mathplotai.com/en/case/definition-of-complementary-angles-dynamic-geometric-construction/ssss7br3</loc>
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      <lastmod>2026-11-05T07:23:06+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/intuitive-notion-of-limits-1-dynamic-approach-to-a-function/ssss7brq</loc>
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      <loc>https://www.mathplotai.com/zh/case/translations-and-stretches-of-function/ssss7br1</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/translations-and-stretches-of-function/ssss7br1</loc>
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      <lastmod>2026-11-04T15:51:41+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/box-whisker-vs-histogram/ssss7brm</loc>
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      <lastmod>2026-11-04T21:36:05+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/box-whisker-vs-histogram/ssss7brm</loc>
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      <lastmod>2026-11-04T21:36:05+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/demonstrating-the-locus-definition-of-a-parabola/ssss7brj</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/demonstrating-the-locus-definition-of-a-parabola/ssss7brj"/>
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      <lastmod>2026-11-04T19:30:00+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/demonstrating-the-locus-definition-of-a-parabola/ssss7brj</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/demonstrating-the-locus-definition-of-a-parabola/ssss7brj"/>
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      <lastmod>2026-11-04T19:30:00+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/dilation-line/ssss7brp</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/dilation-line/ssss7brp</loc>
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      <lastmod>2026-11-04T18:25:30+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/perpendicular-bisector-practice-with-feedback/ssss7brw</loc>
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      <lastmod>2026-11-04T15:41:23+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/perpendicular-bisector-practice-with-feedback/ssss7brw</loc>
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      <lastmod>2026-11-04T15:41:23+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/logarithmic-functions-graphing-and-comparison/ssss7br6</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/logarithmic-functions-graphing-and-comparison/ssss7br6"/>
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      <lastmod>2026-11-04T19:57:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/logarithmic-functions-graphing-and-comparison/ssss7br6</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/logarithmic-functions-graphing-and-comparison/ssss7br6"/>
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      <lastmod>2026-11-04T19:57:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/mapping-diagrams-and-graphs-of-functions-by-staffas-broussard-2/ssss7brg</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/mapping-diagrams-and-graphs-of-functions-by-staffas-broussard-2/ssss7brg"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/mapping-diagrams-and-graphs-of-functions-by-staffas-broussard-2/ssss7brg"/>
      <lastmod>2026-11-04T15:29:17+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/mapping-diagrams-and-graphs-of-functions-by-staffas-broussard-2/ssss7brg</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/mapping-diagrams-and-graphs-of-functions-by-staffas-broussard-2/ssss7brg"/>
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      <lastmod>2026-11-04T15:29:17+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/periodicity-of-cosine/ssss7br9</loc>
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      <lastmod>2026-11-04T15:18:29+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/periodicity-of-cosine/ssss7br9</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/periodicity-of-cosine/ssss7br9"/>
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      <lastmod>2026-11-04T15:18:29+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/plotting-parametric-and-polar-curves/ssss7bre</loc>
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      <loc>https://www.mathplotai.com/en/case/plotting-parametric-and-polar-curves/ssss7bre</loc>
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      <lastmod>2026-11-04T20:58:45+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/exploring-scale-factor-and-point-of-dilation-with-polygons/ssss7br4</loc>
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      <loc>https://www.mathplotai.com/zh/case/equilateral-triangle-cross-sections-exploration/ssss7bra</loc>
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      <loc>https://www.mathplotai.com/en/case/equilateral-triangle-cross-sections-exploration/ssss7bra</loc>
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      <lastmod>2026-11-04T18:00:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/visual-proof-of-pythagoras-theorem/ssss7brc</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/visual-proof-of-pythagoras-theorem/ssss7brc</loc>
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      <lastmod>2026-11-04T18:35:05+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/pythagorean-theorem-rotation-proof/ssss7brr</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/pythagorean-theorem-rotation-proof/ssss7brr</loc>
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      <loc>https://www.mathplotai.com/zh/case/exponential-function-transformations-by-greenmaths-3/ssss7brh</loc>
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      <loc>https://www.mathplotai.com/en/case/exponential-function-transformations-by-greenmaths-3/ssss7brh</loc>
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      <lastmod>2026-11-04T17:07:36+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/comparing-two-means/ssss7brt</loc>
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      <lastmod>2026-11-04T15:40:24+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/comparing-two-means/ssss7brt</loc>
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      <lastmod>2026-11-04T15:40:24+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/complex-function-mappings-visualization/ssss7brx</loc>
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      <lastmod>2026-11-04T19:26:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/complex-function-mappings-visualization/ssss7brx</loc>
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      <lastmod>2026-11-04T19:26:40+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/edgardo-alandete-s-proof-of-the-pythagorean-theorem-4/ssss7bri</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/edgardo-alandete-s-proof-of-the-pythagorean-theorem-4/ssss7bri"/>
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      <lastmod>2026-11-05T06:33:39+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/edgardo-alandete-s-proof-of-the-pythagorean-theorem-4/ssss7bri</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/edgardo-alandete-s-proof-of-the-pythagorean-theorem-4/ssss7bri"/>
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      <lastmod>2026-11-05T06:33:39+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/odd-and-even-properties-of-sine-and-cosine/ssss7bro</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/odd-and-even-properties-of-sine-and-cosine/ssss7bro"/>
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      <lastmod>2026-11-04T21:40:16+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/odd-and-even-properties-of-sine-and-cosine/ssss7bro</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/odd-and-even-properties-of-sine-and-cosine/ssss7bro"/>
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      <lastmod>2026-11-04T21:40:16+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/unit-circle-for-angles-greater-than-90/ssss7bhs</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/unit-circle-for-angles-greater-than-90/ssss7bhs"/>
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      <lastmod>2026-11-04T17:50:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/unit-circle-for-angles-greater-than-90/ssss7bhs</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/unit-circle-for-angles-greater-than-90/ssss7bhs"/>
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      <lastmod>2026-11-04T17:50:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/cosine-function-with-slider-for-phase-shift/ssss7bh7</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cosine-function-with-slider-for-phase-shift/ssss7bh7"/>
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      <lastmod>2026-11-04T17:03:09+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/cosine-function-with-slider-for-phase-shift/ssss7bh7</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/cosine-function-with-slider-for-phase-shift/ssss7bh7"/>
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      <lastmod>2026-11-04T17:03:09+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/decomposition-of-velocity-and-acceleration-vectors-on-parametric-curve/ssss7bhn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/decomposition-of-velocity-and-acceleration-vectors-on-parametric-curve/ssss7bhn"/>
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      <lastmod>2026-11-04T15:30:10+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/decomposition-of-velocity-and-acceleration-vectors-on-parametric-curve/ssss7bhn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/decomposition-of-velocity-and-acceleration-vectors-on-parametric-curve/ssss7bhn"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/decomposition-of-velocity-and-acceleration-vectors-on-parametric-curve/ssss7bhn"/>
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      <lastmod>2026-11-04T15:30:10+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/constructing-a-cylinder-in-geogebra-with-calculus-applications/ssss7bh2</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/constructing-a-cylinder-in-geogebra-with-calculus-applications/ssss7bh2"/>
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      <lastmod>2026-11-04T09:37:49+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/constructing-a-cylinder-in-geogebra-with-calculus-applications/ssss7bh2</loc>
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      <lastmod>2026-11-04T09:37:49+00:00</lastmod>
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      <lastmod>2026-11-04T21:24:40+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exploring-inscribed-angles-of-circles/ssss7btg</loc>
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      <loc>https://www.mathplotai.com/en/case/exploring-inscribed-angles-of-circles/ssss7btg</loc>
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      <lastmod>2026-11-05T07:36:27+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/the-sound-of-a-sine-wave-by-malin-christersson/ssss7bt9</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/the-sound-of-a-sine-wave-by-malin-christersson/ssss7bt9"/>
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      <loc>https://www.mathplotai.com/en/case/the-sound-of-a-sine-wave-by-malin-christersson/ssss7bt9</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/modeling-with-polynomial-functions/ssss7bte</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/modeling-with-polynomial-functions/ssss7bte</loc>
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      <lastmod>2026-11-04T17:38:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/translation-tessellation-step-5/ssss7btv</loc>
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      <loc>https://www.mathplotai.com/en/case/translation-tessellation-step-5/ssss7btv</loc>
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      <loc>https://www.mathplotai.com/zh/case/pendulum-wave-machine-simulation/ssss7bt4</loc>
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      <loc>https://www.mathplotai.com/en/case/pendulum-wave-machine-simulation/ssss7bt4</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/pendulum-wave-machine-simulation/ssss7bt4"/>
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      <lastmod>2026-11-04T20:37:27+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/trigonometric-ratios-demo-by-mandy-peterson/ssss7btl</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/trigonometric-ratios-demo-by-mandy-peterson/ssss7btl"/>
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      <lastmod>2026-11-04T17:58:24+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/trigonometric-ratios-demo-by-mandy-peterson/ssss7btl</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/trigonometric-ratios-demo-by-mandy-peterson/ssss7btl"/>
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      <loc>https://www.mathplotai.com/zh/case/trigonometry-of-special-right-triangles/ssss7bty</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/trigonometry-of-special-right-triangles/ssss7bty"/>
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      <lastmod>2026-11-04T17:24:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/trigonometry-of-special-right-triangles/ssss7bty</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/trigonometry-of-special-right-triangles/ssss7bty"/>
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      <loc>https://www.mathplotai.com/zh/case/perimeter-variation-demo/ssss7bta</loc>
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      <lastmod>2026-11-04T18:38:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/perimeter-variation-demo/ssss7bta</loc>
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      <lastmod>2026-11-04T18:38:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/equivalent-fractions-circle-area-model/ssss7btc</loc>
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      <lastmod>2026-11-04T17:29:45+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/equivalent-fractions-circle-area-model/ssss7btc</loc>
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      <loc>https://www.mathplotai.com/zh/case/estimating-area-under-a-curve-with-n-rectangles/ssss7btr</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/estimating-area-under-a-curve-with-n-rectangles/ssss7btr"/>
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      <loc>https://www.mathplotai.com/en/case/estimating-area-under-a-curve-with-n-rectangles/ssss7btr</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/estimating-area-under-a-curve-with-n-rectangles/ssss7btr"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/estimating-area-under-a-curve-with-n-rectangles/ssss7btr"/>
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      <lastmod>2026-11-04T20:53:03+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/volume-of-planter-box-by-danielle/ssss7bth</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/volume-of-planter-box-by-danielle/ssss7bth"/>
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      <lastmod>2026-11-04T14:50:54+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/volume-of-planter-box-by-danielle/ssss7bth</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/volume-of-planter-box-by-danielle/ssss7bth"/>
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      <lastmod>2026-11-04T14:50:54+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/polygons-and-centroid-geometric-construction-and-mathematical-concepts/ssss7btt</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/polygons-and-centroid-geometric-construction-and-mathematical-concepts/ssss7btt"/>
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      <loc>https://www.mathplotai.com/en/case/polygons-and-centroid-geometric-construction-and-mathematical-concepts/ssss7btt</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/polygons-and-centroid-geometric-construction-and-mathematical-concepts/ssss7btt"/>
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      <loc>https://www.mathplotai.com/zh/case/trigonometric-ratios-and-slope-relationship/ssss7btx</loc>
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      <loc>https://www.mathplotai.com/en/case/trigonometric-ratios-and-slope-relationship/ssss7btx</loc>
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      <loc>https://www.mathplotai.com/zh/case/dilation-demonstration-by-martin-edwards/ssss7bti</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dilation-demonstration-by-martin-edwards/ssss7bti"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/dilation-demonstration-by-martin-edwards/ssss7bti"/>
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      <loc>https://www.mathplotai.com/en/case/dilation-demonstration-by-martin-edwards/ssss7bti</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dilation-demonstration-by-martin-edwards/ssss7bti"/>
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      <lastmod>2026-11-04T18:35:58+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/maclaurin-polynomials-mapping-diagrams-and-graphs/ssss7bto"/>
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      <lastmod>2026-11-04T19:35:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/rotating-and-dilating-squares/ssss7bx7</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotating-and-dilating-squares/ssss7bx7"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/rotating-and-dilating-squares/ssss7bx7"/>
      <lastmod>2026-11-04T19:35:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/three-circles-tangents-collinear-intersection-points/ssss7bxn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/three-circles-tangents-collinear-intersection-points/ssss7bxn"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/three-circles-tangents-collinear-intersection-points/ssss7bxn"/>
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      <lastmod>2026-11-04T20:01:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/three-circles-tangents-collinear-intersection-points/ssss7bxn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/three-circles-tangents-collinear-intersection-points/ssss7bxn"/>
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      <lastmod>2026-11-04T20:01:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/parabola-with-table-of-values-by-michael-borcherds/ssss7bx2</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parabola-with-table-of-values-by-michael-borcherds/ssss7bx2"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/parabola-with-table-of-values-by-michael-borcherds/ssss7bx2"/>
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      <lastmod>2026-11-04T19:47:48+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/parabola-with-table-of-values-by-michael-borcherds/ssss7bx2</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parabola-with-table-of-values-by-michael-borcherds/ssss7bx2"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/parabola-with-table-of-values-by-michael-borcherds/ssss7bx2"/>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/quadrilateral-g/ssss7bxk</loc>
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      <lastmod>2026-11-04T15:15:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/quadrilateral-g/ssss7bxk</loc>
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      <lastmod>2026-11-04T15:15:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/radians-number-line-and-the-unit-circle-by-irina-boyadzhiev/ssss7bxz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/radians-number-line-and-the-unit-circle-by-irina-boyadzhiev/ssss7bxz"/>
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      <lastmod>2026-11-04T18:06:37+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/radians-number-line-and-the-unit-circle-by-irina-boyadzhiev/ssss7bxz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/radians-number-line-and-the-unit-circle-by-irina-boyadzhiev/ssss7bxz"/>
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      <lastmod>2026-11-04T18:06:37+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/segment-addition-points-segments-and-distance-construction/ssss7bx0</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/segment-addition-points-segments-and-distance-construction/ssss7bx0"/>
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      <lastmod>2026-11-05T06:21:43+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/segment-addition-points-segments-and-distance-construction/ssss7bx0</loc>
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      <lastmod>2026-11-05T06:21:43+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/magic-point-6-slider-driven-linear-interpolation-between-a-and-b/ssss7bxd</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/magic-point-6-slider-driven-linear-interpolation-between-a-and-b/ssss7bxd"/>
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      <lastmod>2026-11-05T07:16:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/magic-point-6-slider-driven-linear-interpolation-between-a-and-b/ssss7bxd</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/magic-point-6-slider-driven-linear-interpolation-between-a-and-b/ssss7bxd"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/magic-point-6-slider-driven-linear-interpolation-between-a-and-b/ssss7bxd"/>
      <lastmod>2026-11-05T07:16:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/arc-length-of-sectors/ssss7bxf</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/arc-length-of-sectors/ssss7bxf</loc>
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      <lastmod>2026-11-04T17:26:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/long-jump-trajectory-analysis/ssss7bx8</loc>
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      <lastmod>2026-11-04T17:59:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/long-jump-trajectory-analysis/ssss7bx8</loc>
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      <lastmod>2026-11-04T17:59:43+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/euler-line-concurrency-points/ssss7bxu</loc>
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      <lastmod>2026-11-04T15:29:50+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/euler-line-concurrency-points/ssss7bxu</loc>
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      <lastmod>2026-11-04T15:29:50+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/parallelogram-area-and-square-coverage/ssss7bx5</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parallelogram-area-and-square-coverage/ssss7bx5"/>
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      <lastmod>2026-11-05T06:20:29+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/parallelogram-area-and-square-coverage/ssss7bx5</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/parallelogram-area-and-square-coverage/ssss7bx5"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/parallelogram-area-and-square-coverage/ssss7bx5"/>
      <lastmod>2026-11-05T06:20:29+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/matrix-translations-exploration/ssss7bxb</loc>
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      <lastmod>2026-11-04T20:01:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/matrix-translations-exploration/ssss7bxb</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/matrix-translations-exploration/ssss7bxb"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/matrix-translations-exploration/ssss7bxb"/>
      <lastmod>2026-11-04T20:01:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/quart-of-ellipse-ellipse-of-inertia/ssss7bx3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quart-of-ellipse-ellipse-of-inertia/ssss7bx3"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/quart-of-ellipse-ellipse-of-inertia/ssss7bx3"/>
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      <lastmod>2026-11-04T20:46:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/quart-of-ellipse-ellipse-of-inertia/ssss7bx3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quart-of-ellipse-ellipse-of-inertia/ssss7bx3"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/quart-of-ellipse-ellipse-of-inertia/ssss7bx3"/>
      <lastmod>2026-11-04T20:46:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/unwrapping-the-unit-circle-to-graph-trigonometric-functions/ssss7bxq</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/unwrapping-the-unit-circle-to-graph-trigonometric-functions/ssss7bxq"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/unwrapping-the-unit-circle-to-graph-trigonometric-functions/ssss7bxq"/>
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      <lastmod>2026-11-04T21:03:20+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/unwrapping-the-unit-circle-to-graph-trigonometric-functions/ssss7bxq</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/unwrapping-the-unit-circle-to-graph-trigonometric-functions/ssss7bxq"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/unwrapping-the-unit-circle-to-graph-trigonometric-functions/ssss7bxq"/>
      <lastmod>2026-11-04T21:03:20+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/division-of-a-fraction-by-a-whole-number/ssss7bx1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/division-of-a-fraction-by-a-whole-number/ssss7bx1"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/division-of-a-fraction-by-a-whole-number/ssss7bx1"/>
      <lastmod>2026-11-04T14:52:59+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/division-of-a-fraction-by-a-whole-number/ssss7bx1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/division-of-a-fraction-by-a-whole-number/ssss7bx1"/>
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      <lastmod>2026-11-04T14:52:59+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/fractions-and-whole-parts/ssss7bxm</loc>
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      <lastmod>2026-11-04T19:25:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/fractions-and-whole-parts/ssss7bxm</loc>
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      <lastmod>2026-11-04T19:25:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/moir-patterns-demo/ssss7bxj</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/moir-patterns-demo/ssss7bxj"/>
      <lastmod>2026-11-05T07:20:03+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/moir-patterns-demo/ssss7bxj</loc>
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      <lastmod>2026-11-05T07:20:03+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/vertical-line-test-is-the-equation-a-function/ssss7bxr</loc>
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      <loc>https://www.mathplotai.com/en/case/vertical-line-test-is-the-equation-a-function/ssss7bxr</loc>
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      <loc>https://www.mathplotai.com/zh/case/3d-implicit-surface-grapher-krone/ssss7bxt</loc>
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      <loc>https://www.mathplotai.com/zh/case/exploring-the-properties-of-kites/ssss7boz</loc>
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      <loc>https://www.mathplotai.com/en/case/exploring-the-properties-of-kites/ssss7boz</loc>
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      <loc>https://www.mathplotai.com/en/case/constructing-polygons-with-geogebra/ssss7bod</loc>
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      <loc>https://www.mathplotai.com/zh/case/hypotenuse-is-the-longest-side-in-a-right-triangle/ssss7bom</loc>
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      <loc>https://www.mathplotai.com/zh/case/ferris-wheel-and-trigonometry/ssss7boj</loc>
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      <loc>https://www.mathplotai.com/zh/case/reflection-transformation-demo-by-mathspace/ssss7bo6</loc>
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      <loc>https://www.mathplotai.com/en/case/reflection-transformation-demo-by-mathspace/ssss7bo6</loc>
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      <loc>https://www.mathplotai.com/zh/case/parallelogram-exploration-by-dan-buker/ssss7bog</loc>
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      <loc>https://www.mathplotai.com/en/case/parallelogram-exploration-by-dan-buker/ssss7bog</loc>
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      <lastmod>2026-11-04T17:41:39+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/binomial-and-normal-distribution-by-malin-christersson/ssss7bo9</loc>
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      <lastmod>2026-11-04T20:38:15+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/sine-graph-by-roger-lui/ssss7boe</loc>
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      <lastmod>2026-11-04T21:36:28+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/sine-graph-by-roger-lui/ssss7boe</loc>
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      <lastmod>2026-11-04T21:36:28+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/parallel-lines-by-kjhunjhnuwala/ssss7bov</loc>
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      <lastmod>2026-11-04T15:30:55+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/parallel-lines-by-kjhunjhnuwala/ssss7bov</loc>
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      <lastmod>2026-11-04T15:30:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/vector-projections-exploration/ssss7bo4</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/vector-projections-exploration/ssss7bo4</loc>
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      <lastmod>2026-11-04T21:11:51+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/dynamic-demonstration-of-the-area-of-a-trapezium/ssss7bol</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-demonstration-of-the-area-of-a-trapezium/ssss7bol"/>
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      <lastmod>2026-11-04T14:55:03+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/dynamic-demonstration-of-the-area-of-a-trapezium/ssss7bol</loc>
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      <lastmod>2026-11-04T14:55:03+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/angle-between-tangent-and-radius/ssss73ns</loc>
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      <loc>https://www.mathplotai.com/zh/case/parabola-scalene-triangles-and-3d-vectors-geometric-construction-with-arithme/ssss73nv</loc>
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      <loc>https://www.mathplotai.com/zh/case/sss-congruence-demonstration-by-jonathan-garfield/ssss73ni</loc>
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      <loc>https://www.mathplotai.com/zh/case/symmetric-trapezium-by-arthur-lee/ssss7328</loc>
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      <loc>https://www.mathplotai.com/zh/case/internal-ratios-of-similar-triangles/ssss7325</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/internal-ratios-of-similar-triangles/ssss7325</loc>
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      <loc>https://www.mathplotai.com/zh/case/graphing-the-inverse-of-a-logarithm/ssss732b</loc>
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      <loc>https://www.mathplotai.com/zh/case/missing-supplementary-angle-geometric-construction-and-angle-practice/ssss732m</loc>
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      <loc>https://www.mathplotai.com/zh/case/dilations-and-similar-triangles/ssss732j</loc>
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      <loc>https://www.mathplotai.com/en/case/weighted-average-rainfall-via-voronoi-regions-in-colorado/ssss732p</loc>
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      <lastmod>2026-11-04T18:04:46+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/golden-rectangles/ssss732w</loc>
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      <loc>https://www.mathplotai.com/zh/case/derivative-of-inverse-secant-function/ssss7306</loc>
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      <loc>https://www.mathplotai.com/zh/case/quadratic-equation-factorization-quiz/ssss73b5</loc>
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      <loc>https://www.mathplotai.com/zh/case/probability-fractal-geometry-interaction-demo/ssss73bq</loc>
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      <loc>https://www.mathplotai.com/en/case/probability-fractal-geometry-interaction-demo/ssss73bq</loc>
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      <loc>https://www.mathplotai.com/zh/case/surface-area-of-a-cuboid/ssss73b1</loc>
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      <loc>https://www.mathplotai.com/zh/case/transformations-curtain/ssss73wp</loc>
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      <loc>https://www.mathplotai.com/zh/case/matching-pie-chart-to-dot-plot/ssss73gj</loc>
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      <loc>https://www.mathplotai.com/zh/case/flip-flop-reflection-puzzle/ssss73gw</loc>
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      <loc>https://www.mathplotai.com/en/case/flip-flop-reflection-puzzle/ssss73gw</loc>
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      <lastmod>2026-11-04T21:25:51+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/3d-implicit-surface-grapher-bone/ssss73g6</loc>
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      <loc>https://www.mathplotai.com/en/case/3d-implicit-surface-grapher-bone/ssss73g6</loc>
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      <loc>https://www.mathplotai.com/zh/case/line-1/ssss73gg</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/line-1/ssss73gg</loc>
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      <loc>https://www.mathplotai.com/zh/case/median-median-with-least-squares/ssss73g9</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/triangle-dilations-demo/ssss73ge</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/triangle-dilations-demo/ssss73ge</loc>
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      <loc>https://www.mathplotai.com/zh/case/the-limit-definition-of-the-derivative/ssss73gv</loc>
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      <loc>https://www.mathplotai.com/en/case/the-limit-definition-of-the-derivative/ssss73gv</loc>
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      <lastmod>2026-11-04T19:24:53+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/intersection-of-two-parabolas-by-tom-button/ssss73g4</loc>
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    <url>
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      <lastmod>2026-11-04T18:33:55+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/sss-triangle-congruence-exploration-by-dgibson/ssss73ga</loc>
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      <lastmod>2026-11-04T18:30:25+00:00</lastmod>
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      <lastmod>2026-11-04T19:00:55+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/mandelbrot-iteration-orbits-by-ben-sparks/ssss73gr</loc>
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      <lastmod>2026-11-04T21:42:19+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/mandelbrot-iteration-orbits-by-ben-sparks/ssss73gr</loc>
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      <lastmod>2026-11-04T21:42:19+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/constructing-a-parabola-with-parameters/ssss73gh</loc>
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      <lastmod>2026-11-04T21:10:09+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/dilations-of-a-triangle-with-respect-to-one-of-its-vertices/ssss73gt</loc>
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      <lastmod>2026-11-04T20:53:20+00:00</lastmod>
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      <lastmod>2026-11-04T20:53:20+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/rhumb-line-or-spherical-spiral/ssss73gx</loc>
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      <lastmod>2026-11-04T18:49:56+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/sine-and-cosine-table-geometric-and-trigonometric-visualization/ssss7392</loc>
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      <loc>https://www.mathplotai.com/zh/case/glide-reflection-transformation-by-jchirles/ssss7390</loc>
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      <loc>https://www.mathplotai.com/zh/case/fitting-a-sine-equation-from-data/ssss739f</loc>
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      <loc>https://www.mathplotai.com/zh/case/unit-circle-by-will-elliott-2/ssss7398</loc>
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      <loc>https://www.mathplotai.com/zh/case/unit-circle-tangent-exploration/ssss7395</loc>
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      <loc>https://www.mathplotai.com/en/case/unit-circle-tangent-exploration/ssss7395</loc>
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      <lastmod>2026-11-04T21:57:31+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/largest-volume-tetrahedron-on-a-sphere/ssss734d</loc>
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      <loc>https://www.mathplotai.com/zh/case/constructing-isogonal-conjugates/ssss734f</loc>
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      <loc>https://www.mathplotai.com/zh/case/properties-of-parallelograms-by-janet-gilmore/ssss7345</loc>
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      <loc>https://www.mathplotai.com/en/case/properties-of-parallelograms-by-janet-gilmore/ssss7345</loc>
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      <loc>https://www.mathplotai.com/zh/case/connecting-perpendicular-bisector-to-reflections/ssss734b</loc>
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      <loc>https://www.mathplotai.com/zh/case/exploring-the-points-of-concurrency-of-a-triangle/ssss7343</loc>
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      <loc>https://www.mathplotai.com/zh/case/squares-in-a-rectangle/ssss734q</loc>
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      <loc>https://www.mathplotai.com/zh/case/dynamic-unit-circle-reference-geometric-construction-and-parameter-exploration/ssss734m</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-unit-circle-reference-geometric-construction-and-parameter-exploration/ssss734m"/>
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      <lastmod>2026-11-04T18:03:29+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/derive-parabola-s-standard-equation/ssss734j</loc>
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      <lastmod>2026-11-04T17:35:35+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/derive-parabola-s-standard-equation/ssss734j</loc>
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      <lastmod>2026-11-04T17:35:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/explore-similarity/ssss734p</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/explore-similarity/ssss734p</loc>
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      <lastmod>2026-11-04T20:02:47+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exploration-of-basic-transformations-by-lisagebbie/ssss734w</loc>
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      <lastmod>2026-11-04T19:19:48+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/cube-net-by-bertram-bromfield/ssss7346</loc>
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      <loc>https://www.mathplotai.com/zh/case/comparing-quadratic-graphs/ssss734g</loc>
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      <loc>https://www.mathplotai.com/en/case/hausdorff-distance-demo/ssss734v</loc>
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      <loc>https://www.mathplotai.com/zh/case/visualizing-triangle-inequalities-by-alan-chan/ssss7344</loc>
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      <loc>https://www.mathplotai.com/en/case/visualizing-triangle-inequalities-by-alan-chan/ssss7344</loc>
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      <loc>https://www.mathplotai.com/en/case/pyramid-showing-edge-geometric-and-stochastic-process/ssss734l</loc>
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      <lastmod>2026-11-04T19:05:45+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/exploring-tangent-lines-in-circles/ssss734y</loc>
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      <loc>https://www.mathplotai.com/en/case/exploring-tangent-lines-in-circles/ssss734y</loc>
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      <lastmod>2026-11-04T20:01:10+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/draw-a-parabola-given-focus-and-directrix/ssss734a</loc>
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      <loc>https://www.mathplotai.com/en/case/draw-a-parabola-given-focus-and-directrix/ssss734a</loc>
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      <lastmod>2026-11-04T21:40:34+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/volume-of-a-solid-of-revolution-around-the-x-axis-by-doug-kuhlmann/ssss734c"/>
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      <lastmod>2026-11-04T11:11:32+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/volume-of-a-solid-of-revolution-around-the-x-axis-by-doug-kuhlmann/ssss734c</loc>
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      <lastmod>2026-11-04T11:11:32+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/integer-multiplication-sign-rules-visualization-by-mathguru/ssss734r</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/integer-multiplication-sign-rules-visualization-by-mathguru/ssss734r"/>
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      <lastmod>2026-11-05T06:44:14+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/integer-multiplication-sign-rules-visualization-by-mathguru/ssss734r</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/integer-multiplication-sign-rules-visualization-by-mathguru/ssss734r"/>
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      <lastmod>2026-11-05T06:44:14+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/congruent-opposite-sides-of-a-quadrilateral/ssss734h"/>
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      <lastmod>2026-11-04T20:05:06+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/composition-of-transformations-with-dilation/ssss734t</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/composition-of-transformations-with-dilation/ssss734t"/>
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      <lastmod>2026-11-04T17:55:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/composition-of-transformations-with-dilation/ssss734t</loc>
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      <lastmod>2026-11-04T17:55:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/find-the-equation-of-a-quadratic-from-its-graph/ssss734x</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/find-the-equation-of-a-quadratic-from-its-graph/ssss734x"/>
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      <lastmod>2026-11-04T20:58:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/find-the-equation-of-a-quadratic-from-its-graph/ssss734x</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/find-the-equation-of-a-quadratic-from-its-graph/ssss734x"/>
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      <lastmod>2026-11-04T20:58:16+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/dynamic-net-of-a-square-based-pyramid-for-surface-area-exploration/ssss734i</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-net-of-a-square-based-pyramid-for-surface-area-exploration/ssss734i"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/dynamic-net-of-a-square-based-pyramid-for-surface-area-exploration/ssss734i"/>
      <lastmod>2026-11-04T20:50:10+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/dynamic-net-of-a-square-based-pyramid-for-surface-area-exploration/ssss734i</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-net-of-a-square-based-pyramid-for-surface-area-exploration/ssss734i"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/dynamic-net-of-a-square-based-pyramid-for-surface-area-exploration/ssss734i"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/dynamic-net-of-a-square-based-pyramid-for-surface-area-exploration/ssss734i"/>
      <lastmod>2026-11-04T20:50:10+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/animation-of-lines-with-square-and-rectangle-by-buhardeen-kansoor-rahman/ssss734o"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/animation-of-lines-with-square-and-rectangle-by-buhardeen-kansoor-rahman/ssss734o"/>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/animation-of-lines-with-square-and-rectangle-by-buhardeen-kansoor-rahman/ssss734o"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/animation-of-lines-with-square-and-rectangle-by-buhardeen-kansoor-rahman/ssss734o"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/animation-of-lines-with-square-and-rectangle-by-buhardeen-kansoor-rahman/ssss734o"/>
      <lastmod>2026-11-04T19:04:42+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/adjust-parameters-of-binomial-distribution/ssss73ls</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/adjust-parameters-of-binomial-distribution/ssss73ls"/>
      <lastmod>2026-11-04T17:23:47+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/adjust-parameters-of-binomial-distribution/ssss73ls</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/adjust-parameters-of-binomial-distribution/ssss73ls"/>
      <lastmod>2026-11-04T17:23:47+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/dilation-of-a-triangle-dynamic-geogebra-demonstration/ssss73ac</loc>
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      <loc>https://www.mathplotai.com/zh/case/rotate-conics/ssss73ah</loc>
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      <loc>https://www.mathplotai.com/zh/case/function-transformations-exploration/ssss73rj</loc>
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      <loc>https://www.mathplotai.com/zh/case/surface-area-exploration-model/ssss73tf</loc>
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      <loc>https://www.mathplotai.com/zh/case/cuboid-surface-diagonal-and-diagonal-plane/ssss73t8</loc>
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      <loc>https://www.mathplotai.com/en/case/cuboid-surface-diagonal-and-diagonal-plane/ssss73t8</loc>
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      <loc>https://www.mathplotai.com/zh/case/vector-translation-by-m-johnson/ssss73tu</loc>
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      <loc>https://www.mathplotai.com/en/case/vector-translation-by-m-johnson/ssss73tu</loc>
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      <loc>https://www.mathplotai.com/zh/case/volume-of-a-cuboid-by-nicolas-erdrich/ssss73t5</loc>
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      <loc>https://www.mathplotai.com/zh/case/triangle-tiling-patterns/ssss73tb</loc>
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      <loc>https://www.mathplotai.com/zh/case/area-of-a-rectangle-by-rosalie83/ssss73t3</loc>
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      <loc>https://www.mathplotai.com/zh/case/z-scores-and-quantiles/ssss73tq</loc>
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      <loc>https://www.mathplotai.com/zh/case/stretched-vs-compressed-graphs/ssss73t1</loc>
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      <loc>https://www.mathplotai.com/zh/case/arc-and-angle-properties-in-a-circle/ssss73tm</loc>
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      <loc>https://www.mathplotai.com/en/case/arc-and-angle-properties-in-a-circle/ssss73tm</loc>
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      <loc>https://www.mathplotai.com/zh/case/approximating-with-euler-s-zigzag-numbers/ssss73tj</loc>
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      <loc>https://www.mathplotai.com/en/case/approximating-with-euler-s-zigzag-numbers/ssss73tj</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/interactive-proof-of-sine-law/ssss73tp</loc>
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      <loc>https://www.mathplotai.com/en/case/interactive-proof-of-sine-law/ssss73tp</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/elliptical-gears/ssss73tw</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/elliptical-gears/ssss73tw</loc>
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      <lastmod>2026-11-04T21:52:29+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/circles-and-angles-relationship/ssss73t6</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/circles-and-angles-relationship/ssss73t6</loc>
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      <loc>https://www.mathplotai.com/zh/case/3d-implicit-surface-grapher-virus/ssss73tg</loc>
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      <lastmod>2026-11-04T18:11:23+00:00</lastmod>
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      <lastmod>2026-11-04T18:11:23+00:00</lastmod>
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      <lastmod>2026-11-04T18:38:21+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/basic-slope-intuition-dynamic-exploration-of-linear-slope-and-intercept/ssss7qse"/>
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      <loc>https://www.mathplotai.com/en/case/right-circular-cylinder-construction/ssss7qsv</loc>
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      <loc>https://www.mathplotai.com/zh/case/calculus-and-polygon-geometry-demo/ssss7qs4</loc>
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      <loc>https://www.mathplotai.com/en/case/calculus-and-polygon-geometry-demo/ssss7qs4</loc>
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      <loc>https://www.mathplotai.com/zh/case/tangent-and-secant-lines/ssss7qsl</loc>
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      <loc>https://www.mathplotai.com/zh/case/matrices-and-linear-transformations-eigenvectors/ssss7qn7</loc>
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      <lastmod>2026-11-04T16:13:09+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/matrices-and-linear-transformations-eigenvectors/ssss7qn7</loc>
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      <lastmod>2026-11-04T16:13:09+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/proof-for-area-of-a-parallelogram-using-similar-triangles-and-geometric-constru/ssss7qnn"/>
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      <lastmod>2026-11-04T16:37:31+00:00</lastmod>
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      <lastmod>2026-11-04T16:37:31+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/complex-function-w-z/ssss7qn2</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/complex-function-w-z/ssss7qn2</loc>
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      <lastmod>2026-11-04T20:57:35+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/digital-fingerprint-with-matrices/ssss7qnk</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/digital-fingerprint-with-matrices/ssss7qnk</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/constructed-rectangle-demonstration/ssss7qnz</loc>
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      <loc>https://www.mathplotai.com/zh/case/reflection-and-translation-of-points/ssss7qnm</loc>
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      <loc>https://www.mathplotai.com/en/case/reflection-and-translation-of-points/ssss7qnm</loc>
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      <loc>https://www.mathplotai.com/zh/case/histogram-plotting-template/ssss7qnj</loc>
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      <loc>https://www.mathplotai.com/en/case/points-of-intersection-5/ssss7qnp</loc>
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      <lastmod>2026-11-04T14:58:03+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/equivalent-fractions-by-michael-karpman/ssss7qnw</loc>
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      <loc>https://www.mathplotai.com/en/case/equivalent-fractions-by-michael-karpman/ssss7qnw</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/proof-of-time-vector-and-hypothesis/ssss7qn6</loc>
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      <loc>https://www.mathplotai.com/en/case/proof-of-time-vector-and-hypothesis/ssss7qn6</loc>
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      <loc>https://www.mathplotai.com/zh/case/demonstration-of-absolute-values-on-the-complex-plane/ssss7qkr</loc>
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      <lastmod>2026-11-04T19:12:59+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/cube-nets-by-anthony-or/ssss7qkh</loc>
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      <loc>https://www.mathplotai.com/en/case/cube-nets-by-anthony-or/ssss7qkh</loc>
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      <loc>https://www.mathplotai.com/zh/case/steiner-circumellipse-geometric-construction-and-mathematical-concepts/ssss7qdy</loc>
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      <loc>https://www.mathplotai.com/en/case/steiner-circumellipse-geometric-construction-and-mathematical-concepts/ssss7qdy</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/hyperbola-lab-exploring-hyperbola-and-trapezoid-volume/ssss7qda</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-lab-exploring-hyperbola-and-trapezoid-volume/ssss7qda"/>
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      <lastmod>2026-11-04T16:52:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/hyperbola-lab-exploring-hyperbola-and-trapezoid-volume/ssss7qda</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-lab-exploring-hyperbola-and-trapezoid-volume/ssss7qda"/>
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      <lastmod>2026-11-04T16:52:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/linear-combination-of-two-vectors-in-2d/ssss7qdc</loc>
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      <lastmod>2026-11-04T08:25:20+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/linear-combination-of-two-vectors-in-2d/ssss7qdc</loc>
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      <lastmod>2026-11-04T08:25:20+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/volume-of-a-cuboid-geogebra-construction-and-exploration/ssss7qdr</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/volume-of-a-cuboid-geogebra-construction-and-exploration/ssss7qdr"/>
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      <loc>https://www.mathplotai.com/en/case/volume-of-a-cuboid-geogebra-construction-and-exploration/ssss7qdr</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/volume-of-a-cuboid-geogebra-construction-and-exploration/ssss7qdr"/>
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      <lastmod>2026-11-04T10:59:53+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/wallpaper-p4-symmetry-pattern/ssss7qdh</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/wallpaper-p4-symmetry-pattern/ssss7qdh</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/wallpaper-p4-symmetry-pattern/ssss7qdh"/>
      <lastmod>2026-11-04T19:30:39+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/two-variable-statistics-analysis/ssss7qdt</loc>
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      <lastmod>2026-11-04T19:43:00+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/two-variable-statistics-analysis/ssss7qdt</loc>
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      <lastmod>2026-11-04T19:43:00+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/constructing-a-triangle-with-a-side-and-two-angles/ssss7qdx</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/constructing-a-triangle-with-a-side-and-two-angles/ssss7qdx"/>
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      <lastmod>2026-11-04T20:55:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/constructing-a-triangle-with-a-side-and-two-angles/ssss7qdx</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/constructing-a-triangle-with-a-side-and-two-angles/ssss7qdx"/>
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      <lastmod>2026-11-04T20:55:25+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/dynamic-division-measurement-model/ssss7qdi</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/dynamic-division-measurement-model/ssss7qdi</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-division-measurement-model/ssss7qdi"/>
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      <lastmod>2026-11-04T19:01:56+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/special-properties-of-rectangle-diagonals/ssss7qdo</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/special-properties-of-rectangle-diagonals/ssss7qdo"/>
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      <lastmod>2026-11-04T15:35:00+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/special-properties-of-rectangle-diagonals/ssss7qdo</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/special-properties-of-rectangle-diagonals/ssss7qdo"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/special-properties-of-rectangle-diagonals/ssss7qdo"/>
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      <lastmod>2026-11-04T15:35:00+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/dilation-properties-demo/ssss7qfs</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/dilation-properties-demo/ssss7qfs</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dilation-properties-demo/ssss7qfs"/>
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      <lastmod>2026-11-04T18:10:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/volume-of-sphere-via-steinmetz-solid/ssss7qf7</loc>
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      <lastmod>2026-11-04T21:15:15+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/volume-of-sphere-via-steinmetz-solid/ssss7qf7</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/volume-of-sphere-via-steinmetz-solid/ssss7qf7"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/volume-of-sphere-via-steinmetz-solid/ssss7qf7"/>
      <lastmod>2026-11-04T21:15:15+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/isogonal-conjugate-of-a-line/ssss7qfn</loc>
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      <lastmod>2026-11-04T17:24:11+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/isogonal-conjugate-of-a-line/ssss7qfn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/isogonal-conjugate-of-a-line/ssss7qfn"/>
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      <lastmod>2026-11-04T17:24:11+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/pentomino-set/ssss7qf2</loc>
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      <lastmod>2026-11-04T21:06:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/pentomino-set/ssss7qf2</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/pentomino-set/ssss7qf2"/>
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      <lastmod>2026-11-04T21:06:47+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/intersection-of-two-lines-on-a-circle/ssss7qfk</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-of-two-lines-on-a-circle/ssss7qfk"/>
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      <lastmod>2026-11-04T20:08:10+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/intersection-of-two-lines-on-a-circle/ssss7qfk</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/intersection-of-two-lines-on-a-circle/ssss7qfk"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/intersection-of-two-lines-on-a-circle/ssss7qfk"/>
      <lastmod>2026-11-04T20:08:10+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/2-a-visual-paradox-of-semicircle-sequences/ssss7qfz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/2-a-visual-paradox-of-semicircle-sequences/ssss7qfz"/>
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      <lastmod>2026-11-04T15:37:12+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/2-a-visual-paradox-of-semicircle-sequences/ssss7qfz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/2-a-visual-paradox-of-semicircle-sequences/ssss7qfz"/>
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      <lastmod>2026-11-04T15:37:12+00:00</lastmod>
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    <url>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/area-of-rectangle-inscribed-in-a-circle/ssss7qf0"/>
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      <lastmod>2026-11-04T18:03:15+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/area-of-rectangle-inscribed-in-a-circle/ssss7qf0"/>
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      <lastmod>2026-11-04T18:03:15+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/geometric-representation-of-complex-addition-and-multiplication/ssss7qu7</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/geometric-representation-of-complex-addition-and-multiplication/ssss7qu7</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/geometric-representation-of-complex-addition-and-multiplication/ssss7qu7"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/geometric-representation-of-complex-addition-and-multiplication/ssss7qu7"/>
      <lastmod>2026-11-04T21:07:52+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/quadratic-functions-intercepts-form-dynamic-exploration/ssss7qun</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quadratic-functions-intercepts-form-dynamic-exploration/ssss7qun"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/quadratic-functions-intercepts-form-dynamic-exploration/ssss7qun"/>
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      <lastmod>2026-11-04T21:41:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/quadratic-functions-intercepts-form-dynamic-exploration/ssss7qun</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quadratic-functions-intercepts-form-dynamic-exploration/ssss7qun"/>
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      <lastmod>2026-11-04T21:41:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/hyperbola-exploration-by-10620112/ssss7qu2</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-exploration-by-10620112/ssss7qu2"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/hyperbola-exploration-by-10620112/ssss7qu2"/>
      <lastmod>2026-11-04T16:30:17+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/hyperbola-exploration-by-10620112/ssss7qu2</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/hyperbola-exploration-by-10620112/ssss7qu2"/>
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      <lastmod>2026-11-04T16:30:17+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/conway-s-game-of-life/ssss7quk</loc>
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      <lastmod>2026-11-04T21:43:37+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/conway-s-game-of-life/ssss7quk</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/conway-s-game-of-life/ssss7quk"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/conway-s-game-of-life/ssss7quk"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/conway-s-game-of-life/ssss7quk"/>
      <lastmod>2026-11-04T21:43:37+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/exploring-interior-angles-of-polygons-by-sandersd/ssss7quz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-interior-angles-of-polygons-by-sandersd/ssss7quz"/>
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      <lastmod>2026-11-04T21:06:40+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/exploring-interior-angles-of-polygons-by-sandersd/ssss7quz</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-interior-angles-of-polygons-by-sandersd/ssss7quz"/>
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      <lastmod>2026-11-04T21:06:40+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/two-fraction-bars-visually-compare-fractions-with-sliders/ssss7qu0</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/two-fraction-bars-visually-compare-fractions-with-sliders/ssss7qu0"/>
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      <lastmod>2026-11-04T17:46:08+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/two-fraction-bars-visually-compare-fractions-with-sliders/ssss7qu0</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/two-fraction-bars-visually-compare-fractions-with-sliders/ssss7qu0"/>
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      <lastmod>2026-11-04T17:46:08+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/translations-forming-a-pattern/ssss7qud</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/translations-forming-a-pattern/ssss7qud"/>
      <lastmod>2026-11-04T20:25:19+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/translations-forming-a-pattern/ssss7qud</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/translations-forming-a-pattern/ssss7qud"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/translations-forming-a-pattern/ssss7qud"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/translations-forming-a-pattern/ssss7qud"/>
      <lastmod>2026-11-04T20:25:19+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/pizza-and-proportions-of-circle-area/ssss7quf</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/pizza-and-proportions-of-circle-area/ssss7quf"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/pizza-and-proportions-of-circle-area/ssss7quf"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/pizza-and-proportions-of-circle-area/ssss7quf"/>
      <lastmod>2026-11-04T20:09:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/pizza-and-proportions-of-circle-area/ssss7quf</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/pizza-and-proportions-of-circle-area/ssss7quf"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/pizza-and-proportions-of-circle-area/ssss7quf"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/pizza-and-proportions-of-circle-area/ssss7quf"/>
      <lastmod>2026-11-04T20:09:32+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/the-inverse-of-a-parabola/ssss7qu8</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/the-inverse-of-a-parabola/ssss7qu8"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/the-inverse-of-a-parabola/ssss7qu8"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/the-inverse-of-a-parabola/ssss7qu8"/>
      <lastmod>2026-11-04T16:46:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/the-inverse-of-a-parabola/ssss7qu8</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/the-inverse-of-a-parabola/ssss7qu8"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/the-inverse-of-a-parabola/ssss7qu8"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/the-inverse-of-a-parabola/ssss7qu8"/>
      <lastmod>2026-11-04T16:46:45+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/conic-form-of-vertical-parabola/ssss7quu</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/conic-form-of-vertical-parabola/ssss7quu"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/conic-form-of-vertical-parabola/ssss7quu"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/conic-form-of-vertical-parabola/ssss7quu"/>
      <lastmod>2026-11-04T17:02:16+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/conic-form-of-vertical-parabola/ssss7quu</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/conic-form-of-vertical-parabola/ssss7quu"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/conic-form-of-vertical-parabola/ssss7quu"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/conic-form-of-vertical-parabola/ssss7quu"/>
      <lastmod>2026-11-04T17:02:16+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5"/>
      <lastmod>2026-11-04T18:51:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/exponential-and-logarithmic-functions-by-robert-laurie/ssss7qu5"/>
      <lastmod>2026-11-04T18:51:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/eight-circles-problem/ssss7qub</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/eight-circles-problem/ssss7qub"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/eight-circles-problem/ssss7qub"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/eight-circles-problem/ssss7qub"/>
      <lastmod>2026-11-04T17:33:52+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/eight-circles-problem/ssss7qub</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/eight-circles-problem/ssss7qub"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/eight-circles-problem/ssss7qub"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/eight-circles-problem/ssss7qub"/>
      <lastmod>2026-11-04T17:33:52+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/sine-graph-transformations/ssss7qu3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sine-graph-transformations/ssss7qu3"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/sine-graph-transformations/ssss7qu3"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/sine-graph-transformations/ssss7qu3"/>
      <lastmod>2026-11-04T20:31:48+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/sine-graph-transformations/ssss7qu3</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/sine-graph-transformations/ssss7qu3"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/sine-graph-transformations/ssss7qu3"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/sine-graph-transformations/ssss7qu3"/>
      <lastmod>2026-11-04T20:31:48+00:00</lastmod>
    </url>
    <url>
      <loc>https://www.mathplotai.com/zh/case/median-line-of-a-triangle/ssss7quq</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/median-line-of-a-triangle/ssss7quq"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/median-line-of-a-triangle/ssss7quq"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/median-line-of-a-triangle/ssss7quq"/>
      <lastmod>2026-11-04T15:35:55+00:00</lastmod>
    </url>
    <url>
      <loc>https://www.mathplotai.com/en/case/median-line-of-a-triangle/ssss7quq</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/median-line-of-a-triangle/ssss7quq"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/median-line-of-a-triangle/ssss7quq"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/median-line-of-a-triangle/ssss7quq"/>
      <lastmod>2026-11-04T15:35:55+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/rotations-as-art-road-crew/ssss7qu1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotations-as-art-road-crew/ssss7qu1"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/rotations-as-art-road-crew/ssss7qu1"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/rotations-as-art-road-crew/ssss7qu1"/>
      <lastmod>2026-11-04T21:21:33+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/rotations-as-art-road-crew/ssss7qu1</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/rotations-as-art-road-crew/ssss7qu1"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/rotations-as-art-road-crew/ssss7qu1"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/rotations-as-art-road-crew/ssss7qu1"/>
      <lastmod>2026-11-04T21:21:33+00:00</lastmod>
    </url>
    <url>
      <loc>https://www.mathplotai.com/zh/case/transformations-sprinkler/ssss7qum</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/transformations-sprinkler/ssss7qum"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/transformations-sprinkler/ssss7qum"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/transformations-sprinkler/ssss7qum"/>
      <lastmod>2026-11-04T16:23:13+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/transformations-sprinkler/ssss7qum</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/transformations-sprinkler/ssss7qum"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/transformations-sprinkler/ssss7qum"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/transformations-sprinkler/ssss7qum"/>
      <lastmod>2026-11-04T16:23:13+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/wealth-distribution-among-factors-of-production/ssss7quj</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/wealth-distribution-among-factors-of-production/ssss7quj"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/wealth-distribution-among-factors-of-production/ssss7quj"/>
      <lastmod>2026-11-04T21:09:40+00:00</lastmod>
    </url>
    <url>
      <loc>https://www.mathplotai.com/en/case/wealth-distribution-among-factors-of-production/ssss7quj</loc>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/area-under-a-function-riemann-trapezoid-integral/ssss7qup</loc>
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      <loc>https://www.mathplotai.com/en/case/area-under-a-function-riemann-trapezoid-integral/ssss7qup</loc>
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      <loc>https://www.mathplotai.com/zh/case/cube-volume-demonstration-and-geometric-construction/ssss7quw</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/cube-volume-demonstration-and-geometric-construction/ssss7quw"/>
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    <url>
      <loc>https://www.mathplotai.com/en/case/cube-volume-demonstration-and-geometric-construction/ssss7quw</loc>
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      <loc>https://www.mathplotai.com/zh/case/dynamic-demonstration-of-dilation-and-scale-factors/ssss7qu6</loc>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/dynamic-demonstration-of-dilation-and-scale-factors/ssss7qu6"/>
      <lastmod>2026-11-04T11:53:19+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/dynamic-demonstration-of-dilation-and-scale-factors/ssss7qu6</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-demonstration-of-dilation-and-scale-factors/ssss7qu6"/>
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      <lastmod>2026-11-04T11:53:19+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/properties-of-a-parallelogram-demo-by-david-t/ssss7qug</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/properties-of-a-parallelogram-demo-by-david-t/ssss7qug"/>
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      <loc>https://www.mathplotai.com/en/case/properties-of-a-parallelogram-demo-by-david-t/ssss7qug</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/properties-of-a-parallelogram-demo-by-david-t/ssss7qug"/>
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      <loc>https://www.mathplotai.com/zh/case/randomly-generated-normal-distribution-practice-problems/ssss7qu9</loc>
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      <lastmod>2026-11-04T18:36:36+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/randomly-generated-normal-distribution-practice-problems/ssss7qu9</loc>
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      <lastmod>2026-11-04T18:36:36+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/poncelet-s-porism-for-2-ellipses-order-3-by-michael-borcherds/ssss7que</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/poncelet-s-porism-for-2-ellipses-order-3-by-michael-borcherds/ssss7que"/>
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      <lastmod>2026-11-04T16:33:15+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/poncelet-s-porism-for-2-ellipses-order-3-by-michael-borcherds/ssss7que</loc>
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      <lastmod>2026-11-04T16:33:15+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/random-walks-in-the-plane-taxicab-distance/ssss7quv</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/random-walks-in-the-plane-taxicab-distance/ssss7quv"/>
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      <lastmod>2026-11-04T19:24:41+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/random-walks-in-the-plane-taxicab-distance/ssss7quv</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/random-walks-in-the-plane-taxicab-distance/ssss7quv"/>
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      <lastmod>2026-11-04T19:24:41+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/reflection-from-a-real-concave-mirror/ssss7qu4</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/reflection-from-a-real-concave-mirror/ssss7qu4"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/reflection-from-a-real-concave-mirror/ssss7qu4"/>
      <lastmod>2026-11-04T18:42:13+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/reflection-from-a-real-concave-mirror/ssss7qu4</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/reflection-from-a-real-concave-mirror/ssss7qu4"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/reflection-from-a-real-concave-mirror/ssss7qu4"/>
      <lastmod>2026-11-04T18:42:13+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul"/>
      <lastmod>2026-11-04T19:49:27+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/derivative-exploration-by-tom-ahlschwede-2/ssss7qul"/>
      <lastmod>2026-11-04T19:49:27+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy"/>
      <lastmod>2026-11-04T18:45:38+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/four-mutually-tangent-spheres-and-the-radius-of-the-fifth-tangent-sphere/ssss7quy"/>
      <lastmod>2026-11-04T18:45:38+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/tangent-function-grade-11-demo/ssss7qua</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/tangent-function-grade-11-demo/ssss7qua"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/tangent-function-grade-11-demo/ssss7qua"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/tangent-function-grade-11-demo/ssss7qua"/>
      <lastmod>2026-11-04T17:57:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/tangent-function-grade-11-demo/ssss7qua</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/tangent-function-grade-11-demo/ssss7qua"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/tangent-function-grade-11-demo/ssss7qua"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/tangent-function-grade-11-demo/ssss7qua"/>
      <lastmod>2026-11-04T17:57:54+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/translation-demonstration-by-jonathan-robinson/ssss7quc</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/translation-demonstration-by-jonathan-robinson/ssss7quc"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/translation-demonstration-by-jonathan-robinson/ssss7quc"/>
      <lastmod>2026-11-04T19:52:24+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/translation-demonstration-by-jonathan-robinson/ssss7quc</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/translation-demonstration-by-jonathan-robinson/ssss7quc"/>
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      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/translation-demonstration-by-jonathan-robinson/ssss7quc"/>
      <lastmod>2026-11-04T19:52:24+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/dynamic-analysis-descriptive-geometry/ssss7qur</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-analysis-descriptive-geometry/ssss7qur"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/dynamic-analysis-descriptive-geometry/ssss7qur"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/dynamic-analysis-descriptive-geometry/ssss7qur"/>
      <lastmod>2026-11-04T19:07:30+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/dynamic-analysis-descriptive-geometry/ssss7qur</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/dynamic-analysis-descriptive-geometry/ssss7qur"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/dynamic-analysis-descriptive-geometry/ssss7qur"/>
      <xhtml:link rel="alternate" hreflang="x-default" href="https://www.mathplotai.com/zh/case/dynamic-analysis-descriptive-geometry/ssss7qur"/>
      <lastmod>2026-11-04T19:07:30+00:00</lastmod>
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      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/constructing-the-incenter-of-a-triangle-by-gianluca-occhetta/ssss7quh"/>
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      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/constructing-the-incenter-of-a-triangle-by-gianluca-occhetta/ssss7quh"/>
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      <loc>https://www.mathplotai.com/zh/case/convex-hull-of-grid-points-in-a-circle/ssss7q34</loc>
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      <loc>https://www.mathplotai.com/en/case/convex-hull-of-grid-points-in-a-circle/ssss7q34</loc>
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      <loc>https://www.mathplotai.com/zh/case/differentiation-cuboid-optimisation/ssss7q3l</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/differentiation-cuboid-optimisation/ssss7q3l</loc>
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      <loc>https://www.mathplotai.com/zh/case/constructing-solutions-to-quartic-equations/ssss7q3y</loc>
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    <url>
      <loc>https://www.mathplotai.com/en/case/constructing-solutions-to-quartic-equations/ssss7q3y</loc>
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      <loc>https://www.mathplotai.com/zh/case/drawing-a-hyperbola-from-definition/ssss7q3a</loc>
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      <loc>https://www.mathplotai.com/en/case/drawing-a-hyperbola-from-definition/ssss7q3a</loc>
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      <lastmod>2026-11-04T17:12:18+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/volume-calculation-and-solid-drawing/ssss7q3c</loc>
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      <loc>https://www.mathplotai.com/en/case/volume-calculation-and-solid-drawing/ssss7q3c</loc>
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      <lastmod>2026-11-04T18:52:50+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/find-endpoint-of-a-segment-given-midpoint-other-endpoint/ssss7q3r</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/find-endpoint-of-a-segment-given-midpoint-other-endpoint/ssss7q3r"/>
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      <lastmod>2026-11-04T15:40:00+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/find-endpoint-of-a-segment-given-midpoint-other-endpoint/ssss7q3r</loc>
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      <lastmod>2026-11-04T15:40:00+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/exploring-exponential-graphs-and-tangent-slopes/ssss7q3h</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-exponential-graphs-and-tangent-slopes/ssss7q3h"/>
      <xhtml:link rel="alternate" hreflang="en" href="https://www.mathplotai.com/en/case/exploring-exponential-graphs-and-tangent-slopes/ssss7q3h"/>
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      <lastmod>2026-11-04T19:26:03+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/exploring-exponential-graphs-and-tangent-slopes/ssss7q3h</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/exploring-exponential-graphs-and-tangent-slopes/ssss7q3h"/>
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      <lastmod>2026-11-04T19:26:03+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/11-patterns-of-the-cube-interactive-3d-demonstration/ssss7q3t</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/11-patterns-of-the-cube-interactive-3d-demonstration/ssss7q3t"/>
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      <lastmod>2026-11-05T06:29:22+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/11-patterns-of-the-cube-interactive-3d-demonstration/ssss7q3t</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/11-patterns-of-the-cube-interactive-3d-demonstration/ssss7q3t"/>
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      <lastmod>2026-11-05T06:29:22+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/bisecting-a-line-segment-by-mr-rose/ssss7q3x</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/bisecting-a-line-segment-by-mr-rose/ssss7q3x"/>
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      <loc>https://www.mathplotai.com/en/case/bisecting-a-line-segment-by-mr-rose/ssss7q3x</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/bisecting-a-line-segment-by-mr-rose/ssss7q3x"/>
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      <lastmod>2026-11-04T19:23:18+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/p4-frame-geometry-demonstration/ssss7q3i</loc>
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      <lastmod>2026-11-04T19:25:39+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/p4-frame-geometry-demonstration/ssss7q3i</loc>
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      <lastmod>2026-11-04T19:25:39+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/midpoint-of-a-line-segment-geogebra-interactive-example/ssss7q3o</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/midpoint-of-a-line-segment-geogebra-interactive-example/ssss7q3o"/>
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      <lastmod>2026-11-05T06:05:53+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/en/case/midpoint-of-a-line-segment-geogebra-interactive-example/ssss7q3o</loc>
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      <lastmod>2026-11-05T06:05:53+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/tyler-s-pythagorean-triple-by-user1996/ssss7qqs</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/tyler-s-pythagorean-triple-by-user1996/ssss7qqs"/>
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      <loc>https://www.mathplotai.com/en/case/tyler-s-pythagorean-triple-by-user1996/ssss7qqs</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/tyler-s-pythagorean-triple-by-user1996/ssss7qqs"/>
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      <lastmod>2026-11-04T21:52:21+00:00</lastmod>
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    <url>
      <loc>https://www.mathplotai.com/zh/case/quadratic-functions-matching-locus-of-a-constrained-point/ssss7qq7</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quadratic-functions-matching-locus-of-a-constrained-point/ssss7qq7"/>
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      <lastmod>2026-11-04T11:50:55+00:00</lastmod>
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      <loc>https://www.mathplotai.com/en/case/quadratic-functions-matching-locus-of-a-constrained-point/ssss7qq7</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/quadratic-functions-matching-locus-of-a-constrained-point/ssss7qq7"/>
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      <lastmod>2026-11-04T11:50:55+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/constructing-a-golden-section-rectangle/ssss7qqn</loc>
      <xhtml:link rel="alternate" hreflang="zh" href="https://www.mathplotai.com/zh/case/constructing-a-golden-section-rectangle/ssss7qqn"/>
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      <loc>https://www.mathplotai.com/en/case/constructing-a-golden-section-rectangle/ssss7qqn</loc>
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      <lastmod>2026-11-04T17:47:34+00:00</lastmod>
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      <loc>https://www.mathplotai.com/zh/case/central-and-inscribed-angles-demo/ssss7qq4</loc>
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      <loc>https://www.mathplotai.com/zh/case/hyperbola-construction-project/ssss7qql</loc>
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      <loc>https://www.mathplotai.com/zh/case/dilations-negative-and-positive-scale-factors/ssss7qqi</loc>
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      <loc>https://www.mathplotai.com/zh/case/aqr-section-17-dot-plot-and-box-and-whisker-plot/ssss7qqo</loc>
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      <loc>https://www.mathplotai.com/zh/case/integral-demonstration/ssss7q17</loc>
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