平行线与截线-第一部分

GeoGebra 命令及参数

1. Point(eq1) → A
2. Line(B, A) → f
3. Line(C, f) → g
4. Point(eq2) → D
5. Line(D, E) → h
6. Intersect(g, h) → F
7. Intersect(f, h) → G
8. Point(h) → H
9. Point(f) → I
10. Point(g) → J
11. Point(g) → K
12. Angle(K, F, D) → α
13. Angle(I, G, H) → β
14. Angle(H, G, A) → γ
15. Angle(D, F, J) → δ
16. Angle(K, F, D) → ε
17. Point(f) → L
18. Point(g) → M
19. Point(f) → N
20. Angle(H, G, A) → ζ
21. Angle(N, G, H) → η
22. Angle(D, F, M) → θ
23. Point(g) → O
24. Point(f) → P
25. Angle(D, F, O) → ι
26. Angle(K, F, D) → κ
27. Angle(A, G, F) → λ
28. Angle(G, F, K) → μ
29. Angle(H, G, A) → ν
30. Angle(P, G, H) → ξ
31. Angle(F, G, P) → ο
32. Angle(O, F, G) → ρ
33. Point(g) → Q
34. Point(f) → R
35. Angle(G, F, K) → σ
36. Angle(Q, F, G) → τ
37. Angle(A, G, F) → υ
38. Angle(F, G, R) → ϕ
39. Angle(G, F, K) → χ
40. Angle(F, G, R) → ψ
41. Angle(A, G, F) → ω
42. Angle(Q, F, G) → α_1
43. Point(g) → S
44. Point(g) → T
45. Segment(S, T) → s
46. Point(f) → U
47. Point(f) → V
48. Segment(U, V) → t