矩形周长公式推导
几何画板及绘图内容加载中,请稍等……
本范例通过动态演示,展示如何推导矩形周长公式。通过拖动矩形顶点,直观理解周长与边长关系;涉及的核心数学概念为周长计算及代数公式推导;作图要点运用了Polygon(多边形)、Segment(线段)、Vector(向量)、Translate(平移)等GeoGebra命令;适合小学高年级学生,用于理解周长公式及模型构建能力培养。
GeoGebra 命令及参数
Mirror(P1, yAxis) → P1'Mirror(P1', xAxis) → P1''Mirror(P1'', yAxis) → P1'''Polygon(P1, P1', P1'', P1''') → peep, p1, p1', p1'', p1'''Mirror(D, yAxis) → D'Mirror(D', xAxis) → D''Mirror(D'', yAxis) → D'''Polygon(D, D', D'', D''') → q1, d, d', d'', d'''Dilate(D, If[0 < aniSli ≤ 1, 1 - aniSli, 0], D') → R1Segment(D, R1) → base1Dilate(D', If[1 < aniSli ≤ 2, 2 - aniSli, 0], D'') → R2Segment(D', R2) → heig1Dilate(D'', If[2 < aniSli ≤ 3, 3 - aniSli, 0], D''') → R3Segment(D'', R3) → base2Dilate(D''', If[3 < aniSli ≤ 4, 4 - aniSli, 0], D) → R4Segment(D''', R4) → heig2Vector(A, B) → vl1Vector(C, B) → vl2Polygon(Corner[textEll1, 1] + (-0.5, 0.7), Corner[textEll1, 2] + (-0.5, 0.7), Corner[textEll1, 3] + (-0.5, 0.7), Corner[textEll1, 4] + (-0.5, 0.7)) → poliEll1, f, g, h, iPolygon(Corner[textEll2, 1] + (-0.4, 0.7), Corner[textEll2, 2] + (-0.4, 0.7), Corner[textEll2, 3] + (-0.4, 0.7), Corner[textEll2, 4] + (-0.4, 0.7)) → poliEll2, j, k, l, mPolygon(Corner[textW2, 1] + (-0.6, 0.6), Corner[textW2, 2] + (-0.6, 0.6), Corner[textW2, 3] + (-0.6, 0.6), Corner[textW2, 4] + (-0.6, 0.6)) → poliW2, n, p, q, rPolygon(Corner[textW1, 1] + (-0.6, 0.6), Corner[textW1, 2] + (-0.6, 0.6), Corner[textW1, 3] + (-0.6, 0.6), Corner[textW1, 4] + (-0.6, 0.6)) → poliW1, s, t, a, bVector(E, F) → vw1Vector(G, F) → vw2Translate(poliEll1, Vector[(vl1 * If[4 ≤ aniSli ≤ 5, aniSli - 4, 0])]) → poliEll1'Translate(poliEll2, Vector[(vl2 * If[4 ≤ aniSli ≤ 5, aniSli - 4, 0])]) → poliEll2'Translate(poliW1, Vector[(vw1 * If[6 ≤ aniSli ≤ 7, aniSli - 6, 0])]) → poliW1'Translate(poliW2, Vector[(vw2 * If[6 ≤ aniSli ≤ 7, aniSli - 6, 0])]) → poliW2'Polygon(Corner[text2Ell, 1] + (-0.5, 0.7), Corner[text2Ell, 2] + (-0.5, 0.7), Corner[text2Ell, 3] + (-0.5, 0.7), Corner[text2Ell, 4] + (-0.5, 0.7)) → poli2Ell, c, e, f_1, g_1Polygon(Corner[text2W, 1] + (-0.5, 0.7), Corner[text2W, 2] + (-0.5, 0.7), Corner[text2W, 3] + (-0.5, 0.7), Corner[text2W, 4] + (-0.5, 0.7)) → poli2W, h_1, i_1, j_1, k_1Vector(H, I) → vTwoLVector(J, I) → vTwoWTranslate(poli2Ell, Vector[(vTwoL * If[8 ≤ aniSli ≤ 9, aniSli - 8, 0])]) → poli2Ell'Translate(poli2W, Vector[(vTwoW * If[8 ≤ aniSli ≤ 9, aniSli - 8, 0])]) → poli2W'
AI 绘图提示语参考
绘制一个矩形,通过缩放生成多个矩形,并使用向量和移动变换创建其他图形。图形包括矩形、缩放矩形、向量和移动后的图形。
以上提示语为根据原始绘图命令整理而来,仅供参考。