菱形性质演示 by Jeff Rice

GeoGebra 命令及参数

1. Segment(A, C) → f
2. Point(f) → E
3. OrthogonalLine(E, f) → g
4. Point(g) → B
5. Circle(E, B) → c
6. Intersect(c, g, 2) → D
7. Segment(A, B) → h
8. Segment(B, C) → i
9. Segment(C, D) → j
10. Segment(D, A) → k
11. Segment(B, D) → l
12. Distance(A, B) → distanceAB
13. Distance(B, C) → distanceBC
14. Distance(C, D) → distanceCD
15. Distance(A, D) → distanceAD
16. Distance(A, E) → distanceAE
17. Distance(B, E) → distanceBE
18. Midpoint(B, E) →
19. Distance(D, E) → distanceDE
20. Midpoint(D, E) →
21. Distance(C, E) → distanceCE
22. Midpoint(C, E) →
23. Distance(A, C) → distanceAC
24. Midpoint(A, C) →
25. Distance(B, D) → distanceBD
26. Midpoint(B, D) →
27. Angle(A, B, C) → α
28. Angle(B, C, D) → β
29. Angle(C, D, A) → γ
30. Angle(D, A, B) → δ
31. Angle(A, E, B) → ε
32. Angle(A, B, E) → ζ
33. Angle(E, B, C) → η
34. Angle(B, C, E) → θ
35. Angle(E, C, D) → ι
36. Angle(C, D, E) → κ
37. Angle(E, D, A) → λ
38. Angle(D, A, E) → μ
39. Angle(E, A, B) → ν