射线上的角

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → O
2. Point(xAxis) → V
3. Rotate(V, (-α), O) → V'
4. Ray(O, V) → a
5. Ray(O, V') → b
6. Point(a) → A
7. Circle(O, A) → c
8. Circle(A, O) → d
9. Intersect(d, b) → B', B
10. Circle(B, A) → e
11. Intersect(e, a) → C', C
12. Circle(C, B) → f
13. Intersect(f, b) → D', D
14. Circle(D, C) → g
15. Intersect(g, a) → E', E
16. Circle(E, D) → h
17. Intersect(h, b) → F', F
18. Circle(F, E) → k
19. Intersect(k, a) → G', G
20. Circle(G, F) → p
21. Intersect(p, b) → H', H
22. Circle(H, G) → q
23. Intersect(q, a) → I', I
24. Circle(I, H) → r
25. Intersect(r, b) → J', J
26. Segment(J, I) → i
27. Segment(I, H) → j
28. Segment(H, G) → l
29. Segment(G, F) → m
30. Segment(F, E) → n
31. Segment(E, D) → s
32. Segment(D, C) → t
33. Segment(C, B) → a_1
34. Segment(A, B) → b_1
35. Angle(E, F, D) → β
36. Angle(B, O, A) → γ