平行四边形面积计算

平行四边形面积计算
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2024-02-06 18:06
①本范例演示如何通过分割和组合平行四边形来计算其面积;②涉及的核心数学概念包括平行四边形面积公式、三角形面积计算、几何变换与分割;③作图要点——使用了Textfield, Point, Polygon, PointIn, Spline, SelectedIndex, Vertex, Translate, Text等GeoGebra命令/对象来创建图形、文本和交互功能;④适合小学5-6年级学生,用于学习和理解平行四边形面积公式的推导和应用。

GeoGebra 命令及参数

  1. Textfield(input1) → InputBox1
  2. Textfield(input2) → InputBox2
  3. Textfield(input3) → InputBox3
  4. Textfield(input4) → InputBox4
  5. Point(KantenParallelogramm) → E
  6. Point(KantenParallelogramm) → F
  7. Polygon(A, E, D) → Area1, d, a, e
  8. Polygon(D, F, B, E) → Area2, d_1, f, b, e_1
  9. Polygon(F, C, B) → Area3, b_1, f_1, c
  10. Polygon(BoundaryP1, BoundaryP2, BoundaryP3, BoundaryP4) → Boundary, boundaryp1, boundaryp2, boundaryp3, boundaryp4
  11. PointIn(Boundary) → TriBlueAnchor
  12. PointIn(Boundary) → TriCyanAnchor
  13. PointIn(Boundary) → RectGrayAnchor
  14. PointIn(Boundary) → RectLilaAnchor
  15. PointIn(Boundary) → RectOrangeAnchor
  16. PointIn(Boundary) → RectGreenAnchor
  17. Spline({D, SplineMidOrange, RectOrangeAnchor}, 3) → h
  18. Spline({C, SplineMidCyan, TriCyanAnchor}, 3) → i
  19. SelectedIndex(DD1) → Index1
  20. SelectedIndex(DD2) → Index2
  21. Spline({D, SplineMidBlue, TriBlueAnchor}, 3) → g
  22. Spline({TriCyanAnchor, Midpoint[TriCyanAnchor, TriBlueAnchor], TriBlueAnchor}, 3) → j
  23. Vertex(PolyAnimBlue(1), 1) → PolyAnimBlueP
  24. Vertex(PolyAnimCyan(1), 1) → PolyAnimCyanP
  25. Vertex(PolyAnimOrange(1), 1) → PolyAnimOrangeP
  26. Translate(l1, (0, -13.5)) → l1'
  27. Text("\textsf{A_1}", O, false, true, 0, 0) → Text8
  28. Text("\textsf{A_3}", M, false, true, 0, 0) → Text9
  29. Text((("\textsf{\textcolor{" * ColorText) * "}{A_2}"), N, false, true, 0, 0) → Text10

AI 绘图提示语参考

画一个平行四边形的面积分解示意:在坐标平面中给出平行四边形的四个顶点并连成四边形边界,随后在内部把它划分为三块多边形区域,包括三个三角形区域与一个(相应的)边界矩形/多边形外框区域。对每个区域用清晰的多边形轮廓表示,并在图中放置若干面积标注文字,分别对应不同子区域(例如用不同编号的A样式标记),必要时可用不同颜色的文字以区分各部分。
以上提示语为根据原始绘图命令整理而来,仅供参考。