平行线对应的角

GeoGebra 命令及参数

1. Segment(A, B) → f
2. Line(C, f) → g
3. Point(g) → D
4. Segment(C, D) → h
5. Segment(E, F) → i
6. Intersect(h, i) → G
7. Intersect(f, i) → H
8. Angle(H, G, D) → α
9. Angle(G, H, A) → β
10. Segment(I, J) → j
11. Line(K, j) → k
12. Point(k) → L
13. Segment(K, L) → l
14. Segment(M, N) → m
15. Intersect(j, m) → O
16. Intersect(l, m) → P
17. Angle(I, O, P) → γ
18. Angle(L, P, M) → δ
19. Angle(O, P, K) → ε
20. Angle(B, H, G) → ζ
21. Angle(M, O, I) → η
22. Angle(D, G, E) → θ
23. Segment(Q, R) → n
24. Line(S, n) → p
25. Point(p) → T
26. Segment(S, T) → q
27. Segment(U, V) → r
28. Intersect(q, r) → W
29. Intersect(n, r) → Z
30. Angle(R, Z, U) → ι
31. Angle(S, W, Z) → κ
32. Segment(A_1, B_1) → s
33. Line(C_1, s) → t
34. Point(t) → D_1
35. Segment(C_1, D_1) → a
36. Segment(E_1, F_1) → b
37. Intersect(s, b) → G_1
38. Intersect(a, b) → H_1
39. Angle(E_1, H_1, D_1) → λ
40. Angle(H_1, G_1, B_1) → μ