勾股定理圆的新定理

勾股定理圆的新定理
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2019-07-30 01:57
①本范例演示了勾股定理圆中的新定理及其几何性质;②涉及核心数学概念包括勾股定理、圆、面积、几何变换等;③作图要点使用了Circle, Point, Line, Intersect, Segment, Rotate, Angle, Midpoint, Area, PointIn, Circumference, OrthogonalLine等GeoGebra命令和对象;④适合高中及以上数学学习者和几何爱好者使用。

GeoGebra 命令及参数

  1. Circle(A, a) → c
  2. Point(c) → C
  3. Line(C, A) → f
  4. Intersect(c, f, 2) → D
  5. Point(c) → B
  6. Segment(B, C) → g
  7. Point(f) → E
  8. Rotate(E, 90°, C) → E'
  9. Point(f) → F
  10. Segment(B, D) → h
  11. Angle(D, B, C) → α
  12. Midpoint(D, B) → G
  13. Midpoint(B, C) → H
  14. Circle(G, B) → d
  15. Circle(H, C) → e
  16. Area(d) → b
  17. PointIn(d) → Pointd_1
  18. Area(e) → i
  19. PointIn(e) → Pointe_1
  20. Area(c) → j
  21. PointIn(c) → Pointc_1
  22. Circumference(d) → circumferenced
  23. PointIn(d) → Pointd
  24. Circumference(e) → circumferencee
  25. PointIn(e) → Pointe
  26. Circumference(c) → circumferencec
  27. PointIn(c) → Pointc
  28. Intersect(d, e, 2) → I
  29. OrthogonalLine(B, f) → k
  30. Angle(B, I, D) → β