菱形测量：边长、对角线、角与面积的可视化探究

GeoGebra 命令及参数

1. Point(Circle[B, abs(side)]) → C
2. Segment(B, C) → a
3. Point(Circle[C, abs(side)]) → D
4. Segment(C, D) → b
5. Circle(B, side) → c
6. Circle(D, side) → d
7. Intersect(c, d, 2) → A
8. Segment(B, A) → e
9. Segment(A, D) → f
10. Segment(A, C) → g
11. Segment(B, D) → h
12. Intersect(h, g) → E
13. Distance(A, B) → distanceAB
14. Distance(B, C) → distanceBC
15. Distance(C, D) → distanceCD
16. Distance(D, A) → distanceDA
17. Distance(A, C) → distanceAC
18. Distance(B, D) → distanceBD
19. Distance(A, E) → distanceAE
20. Distance(C, E) → distanceCE
21. Distance(B, E) → distanceBE
22. Distance(D, E) → distanceDE
23. Angle(D, A, B) → α
24. Angle(A, B, C) → β
25. Angle(B, C, D) → γ
26. Angle(C, D, A) → δ
27. Angle(B, E, A) → ε
28. Angle(C, E, B) → ζ
29. Angle(D, E, C) → η
30. Angle(A, E, D) → θ
31. Angle(E, A, B) → ι
32. Angle(A, B, E) → κ
33. Angle(E, B, C) → λ
34. Angle(B, C, E) → μ
35. Angle(E, C, D) → ν
36. Angle(C, D, E) → ξ
37. Angle(E, D, A) → ο
38. Angle(D, A, E) → ρ
39. Polygon(A, B, C, D) → poly1, a_1, b_1, c_1, d_1