角角角定理演示

GeoGebra 命令及参数

1. Line(A, B) → a
2. Point(a) → C
3. Point(a) → D
4. Point(a) → E
5. Point(a) → F
6. Point(a) → G
7. Point(a) → H
8. Circle(C, D) → c
9. Circle(E, F) → d
10. Circle(G, H) → e
11. Point(c) → I
12. Point(d) → J
13. Segment(C, I) → b
14. Angle(D, C, I) → α
15. Angle(F, E, J) → β
16. Rotate(H, f°, G) → H'
17. Angle(H, G, H') → γ
18. Segment(C, D) → g
19. Segment(E, J) → h
20. Segment(E, F) → i
21. Segment(G, H) → j
22. Segment(G, H') → k
23. Rotate(L, α, K) → L'
24. Angle(L, K, L') → δ
25. Rotate(K, (-β), L) → K'
26. Angle(K, L, K') → ε
27. Ray(L, K') → p
28. Ray(K, L') → q
29. Intersect(p, q) → M
30. Segment(K, M) → m
31. Segment(M, L) → n
32. Angle(K, M, L) → ζ
33. Segment(K, L) → r
34. Segment(N, O) → s
35. Rotate(O, α, N) → O'
36. Angle(O, N, O') → η
37. Rotate(N, (-β), O) → N'
38. Angle(N, O, N') → θ
39. Ray(O, N') → a_1
40. Ray(N, O') → b_1
41. Intersect(a_1, b_1) → P
42. Segment(N, P) → t
43. Segment(O, P) → c_1
44. Angle(O, P, N) → ι