Trisecting a Semicircle and Diameter

GeoGebra Commands & Parameters

1. Intersect(xAxis, yAxis) → C
2. Point(xAxis) → A
3. Polygon(C, A, 3) → polígono1, f, g, h, B
4. Ray(C, D) → i
5. Ray(C, E) → j
6. Semicircle(B, A) → c
7. Intersect(c, i, 1) → F
8. Intersect(c, j, 1) → G
9. Center(c) → M
10. Angle(G, M, B) → α
11. Angle(G, M, F) → β
12. Angle(A, M, F) → γ
13. Circle(M, B) → d
14. Segment(M, G) → k
15. Segment(M, F) → l
16. Segment(C, G) → m
17. Segment(C, F) → n
18. Segment(B, E) → b
19. Segment(E, D) → q
20. Segment(D, A) → r
21. Mirror(G, E) → G'
22. Mirror(E, G') → E'
23. Segment(B, G) → p
24. Angle(C, B, A) → δ
25. Angle(A, B, G) → ε
26. Segment(B, F) → s
27. Segment(F, A) → t
28. Angle(B, F, A) → ζ
29. Angle(C, B, F) → η
30. Angle(F, A, D) → θ
31. Angle(D, A, C) → ι
32. ClosestPoint(f, B) → H
33. Segment(B, H) → f_1
34. Segment(G, A) → h_1
35. Angle(A, H, B) → κ
36. Angle(G, A, H) → λ
37. ClosestPoint(f, E) → K
38. Segment(E, K) → i_1
39. Angle(A, K, E) → μ
40. ClosestPoint(h_1, E) → L
41. Segment(E, L) → g_1
42. Angle(E, L, A) → ν
43. Angle(B, G, A) → ξ
44. Mirror(C, q) → C'
45. Segment(B, C') → j_1
46. Segment(C', A) → k_1
47. Segment(G, F) → l_1
48. Segment(A_1, T) → m_1
49. Segment(B_1, S) → n_1
50. Segment(C_1, M) → p_1
51. Segment(D_1, R) → q_1
52. Segment(E_1, Q) → r_1
53. Segment(J, W) → t_1
54. Segment(I, Z) → s_1
55. Segment(N, M) → a_1
56. Segment(O, V) → b_1
57. Segment(P, U) → c_1