基于平移的无字毕达哥拉斯定理

基于平移的无字毕达哥拉斯定理
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2014-09-03 09:02
①本范例通过动态演示,直观展示毕达哥拉斯定理的几何意义,即直角三角形三边关系;②核心数学概念为毕达哥拉斯定理、平移变换、向量运算;③作图要点运用了Circle, Line, Point, Intersect, Segment, Distance, OrthogonalLine, Polygon, Vector, Translate等GeoGebra命令与对象;④适合高中数学教学和学生理解空间变换与几何证明。

GeoGebra 命令及参数

  1. Circle(A, B) → c
  2. Line(A, B) → a
  3. Point(c) → C
  4. Intersect(c, a) → D, E
  5. Segment(C, E) → b
  6. Segment(C, B) → d
  7. Distance(E, B) → e
  8. OrthogonalLine(C, b) → f
  9. OrthogonalLine(E, b) → g
  10. OrthogonalLine(E, a) → h
  11. OrthogonalLine(B, a) → i
  12. OrthogonalLine(B, f) → j
  13. OrthogonalLine(C, f) → k
  14. Circle(E, B) → p
  15. Circle(C, E) → q
  16. Circle(C, B) → r
  17. Intersect(p, h) → F, G
  18. Intersect(q, f) → H, I
  19. Intersect(r, k) → J, K
  20. OrthogonalLine(F, h) → l
  21. OrthogonalLine(H, g) → m
  22. OrthogonalLine(K, k) → n
  23. Intersect(j, n) → L
  24. Intersect(l, i) → M
  25. Intersect(m, g) → N
  26. Polygon(C, H, N, E) → poly1, c_1, h_1, n_1, e_1
  27. Polygon(C, K, L, B) → poly2, c_2, k_1, l_1, b_1
  28. Polygon(E, F, M, B) → poly3, e_2, f_1, m_1, b_2
  29. Line(M, B) → s
  30. Intersect(s, k_1) → O
  31. Vector(O, E) → u
  32. Translate(B, u) → B'
  33. Translate(L, u) → L'
  34. Translate(O, u) → O'
  35. Vector(B, M) → v
  36. Translate(O, v) → O'_1
  37. Translate(K, v) → K'
  38. Translate(C, v) → C'
  39. Translate(B, v) → B'_1
  40. Intersect(c_2, s) → R
  41. Polygon(R, C, B) → poly4, b_3, r_1, c_3
  42. Polygon(B, L, K, R) → poly5, b_4, l_2, k_2, r_2
  43. OrthogonalLine(N, s) → t
  44. Intersect(t, c_1) → S
  45. OrthogonalLine(S, t) → a_1
  46. Intersect(b, e_1) → T
  47. Intersect(a_1, b) → U
  48. Vector(B, F) → w
  49. Translate(B, w) → B'_2
  50. Translate(L, w) → L'_1
  51. Translate(K, w) → K'_1
  52. Translate(R, w) → R'
  53. Polygon(U, C, S) → poly6, s_1, u_1, c_4
  54. Vector(U, R') → z
  55. Point(poly6) → V
  56. Polygon(N, S, U, E) → poly7, n_2, s_2, u_2, e_3
  57. Intersect(a_1, c_1) → W
  58. Polygon(H, N, W) → poly8, w_1, h_2, n_3
  59. Translate(B, w) → B'_3
  60. Translate(L, w) → L'_2
  61. Translate(K, w) → K'_2
  62. Translate(R, w) → R'_1
  63. Polygon(B'_3, L'_2, K'_2, R'_1) → poly5', b'_3, l'_2, k'_2, r'_1
  64. Translate(U, z) → U'
  65. Translate(C, z) → C'_1
  66. Translate(S, z) → S'
  67. Polygon(U', C'_1, S') → poly6', s', u', c'_1
  68. Vector(N, B'_3) → v_1
  69. Translate(H, v_1) → H'
  70. Translate(N, v_1) → N'
  71. Translate(W, v_1) → W'
  72. Polygon(H', N', W') → poly8', w', h', n'
  73. Translate(R, v) → R'_2
  74. Translate(C, v) → C'_2
  75. Translate(B, v) → B'_4
  76. Polygon(R'_2, C'_2, B'_4) → poly4', b'_4, r'_2, c'_2
  77. Vector(S', L'_2) → z_1
  78. Translate(N, z_1) → N'_1
  79. Translate(S, z_1) → S'_1
  80. Translate(U, z_1) → U'_1
  81. Translate(E, z_1) → E'
  82. Polygon(N'_1, S'_1, U'_1, E') → poly7', n'_1, s'_1, u'_1, e'

AI 绘图提示语参考

画一个直角三角形,通过平移演示勾股定理。首先画出直角边和斜边,然后在直角边和斜边上分别作垂线,交点构成新的图形。接着用圆和交点构造平行四边形,展示平移关系。最后通过平移和交点连接,形成多个封闭图形,直观体现勾股定理的几何意义。
以上提示语为根据原始绘图命令整理而来,仅供参考。