勾股定理代数证明

勾股定理代数证明
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2014-01-02 06:21
①本范例演示勾股定理的代数证明方法;②涉及核心数学概念包括勾股定理、树状图、有理数、直方图、正切函数和多边形;③作图要点提炼自GeoGebra命令:Intersect(交点)、Segment(线段)、Distance(距离)、Angle(角度);④适合高中阶段学生学习和理解勾股定理的代数证明过程。

GeoGebra 命令及参数

  1. Intersect(xAxis, yAxis) → A
  2. Segment(B, C) → b
  3. Segment(C, D) → b_1
  4. Segment(D, A) → c
  5. Segment(A, B) → d
  6. Segment(L, K) → e
  7. Segment(K, I) → f
  8. Segment(I, E) → g
  9. Segment(E, L) → h
  10. Distance(B, K) → distanceBK
  11. Distance(K, C) → distanceKC
  12. Intersect(b, d) → F
  13. Intersect(b, e) → G
  14. Segment(F, G) → j
  15. Intersect(c, d) → H
  16. Intersect(d, e) → J
  17. Segment(H, J) → k
  18. Distance(H, J) → distanceHJ
  19. Intersect(c, g) → N
  20. Segment(M, N) → l
  21. Intersect(b, b_1) → O
  22. Intersect(b_1, f) → P
  23. Segment(O, P) → m
  24. Distance(J, F) → distanceJF
  25. Distance(O, P) → distanceOP
  26. Distance(H, N) → distanceHN
  27. Distance(M, N) → distanceMN
  28. Distance(P, M) → distancePM
  29. Distance(J, G) → distanceJG
  30. Distance(G, P) → distanceGP
  31. Distance(P, N) → distancePN
  32. Distance(N, J) → distanceNJ
  33. Angle(A, B, C) → γ
  34. Angle(B, C, D) → δ
  35. Angle(L, K, I) → ε
  36. Angle(I, E, L) → ζ
  37. Angle(E, L, K) → η
  38. Angle(K, I, E) → θ
  39. Angle(D, A, B) → ι
  40. Angle(C, D, A) → κ