梯形探索 by lfletcher

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Segment(A, C) → b
3. Line(C, a) → c
4. Point(c) → D
5. Segment(B, D) → d
6. Polygon(A, B, D, C) → poly1, a_1, b_1, d_1, c_1
7. Polygon(A, B, D, C) → poly2, a_2, b_2, d_2, c_2
8. Angle(C, A, B) → α
9. Angle(A, B, D) → β
10. Angle(B, D, C) → γ
11. Angle(D, C, A) → δ
12. Segment(C, B) → e
13. Segment(A, D) → f
14. Segment(C, B) → g
15. Segment(A, D) → h
16. Intersect(g, h) → E
17. Segment(C, E) → i
18. Segment(A, E) → j
19. Segment(B, E) → k
20. Segment(D, E) → l
21. Segment(C, B) → m
22. Segment(D, A) → n
23. Intersect(m, n) → F
24. Angle(A, F, C) → ε
25. Angle(C, F, D) → ζ
26. Angle(D, F, B) → η
27. Angle(B, F, A) → θ
28. Segment(C, B) → p
29. Segment(D, A) → q
30. Angle(C, A, D) → ι
31. Angle(D, A, B) → κ
32. Angle(A, B, C) → λ
33. Angle(C, B, D) → μ
34. Angle(D, C, B) → ν
35. Angle(B, C, A) → ξ
36. Angle(B, D, A) → ο
37. Angle(A, D, C) → ρ