平行线中的角 by Miss J Kirkham

GeoGebra 命令及参数

1. Line(A, B) → a_1
2. Line(C, a_1) → b_1
3. Line(D, E) → c
4. Point(b_1) → F
5. Intersect(a_1, c) → G
6. Intersect(b_1, c) → H
7. Point(a_1) → I
8. Point(a_1) → J
9. Angle(G, H, F) → δ
10. Angle(I, G, D) → ε
11. Angle(H, G, I) → ζ
12. Angle(J, G, H) → η
13. Angle(D, G, J) → θ
14. Point(b_1) → K
15. Segment(H, K) → a
16. Segment(H, G) → b
17. Point(a_1) → L
18. Segment(L, G) → d
19. Point(b_1) → M
20. Segment(H, M) → g
21. Point(c) → N
22. Segment(H, N) → h
23. Point(a_1) → O
24. Segment(G, O) → i
25. Point(b_1) → P
26. Point(a) → Q
27. Segment(P, Q) → k
28. Point(c) → R
29. Intersect(ζ, c, 1) → S
30. Point(b) → T
31. Segment(R, T) → l
32. Point(a) → U
33. Point(a) → V
34. Segment(H, V) → p
35. Segment(H, G) → q
36. Segment(G, O) → r
37. Point(b_1) → W
38. Angle(W, H, G) → γ
39. Point(c) → Z
40. Angle(Z, H, W) → α
41. Angle(F, H, Z) → β