费马点 - 斐波那契点

GeoGebra 命令及参数

1. Segment(A, M) → a
2. Segment(B, M) → b
3. Segment(C, M) → c
4. Rotate(C, -1.0471975511965976, B) → A'
5. Rotate(C, 1.0471975511965976, A) → B'
6. Rotate(B, -1.0471975511965976, A) → C'
7. Polygon(A, B, C') → poly1, c', a_1, b_1
8. Polygon(A', B, C) → poly2, c_1, a', b_2
9. Polygon(A, B', C) → poly3, c_2, a_2, b'
10. Line(A, A') → e
11. Line(B, B') → f
12. Line(C, C') → g
13. Intersect(e, f) → M'
14. Rotate(M, 1.0471975511965976, A) → M_B
15. Rotate(M, -1.0471975511965976, A) → M_C
16. Segment(M, M_B) → h_B
17. Segment(B', M_B) → h'_B
18. Rotate(M, -1.0471975511965976, B) → M_A
19. Segment(M, M_A) → j
20. Segment(A', M_A) → k
21. Segment(C', M_C) → l
22. Segment(M, M_C) → m
23. Rotate(M, 1.0471975511965976, C) → M'_A
24. Segment(M, M'_A) → q
25. Segment(A', M'_A) → r
26. Rotate(M, -1.0471975511965976, C) → M'_B
27. Segment(B', M'_B) → s
28. Segment(M'_B, M) → t
29. Rotate(M, 1.0471975511965976, B) → M'_C
30. Segment(C', M'_C) → d_1
31. Segment(M, M'_C) → e_1
32. Angle(C, M, A) → α
33. Angle(A, M, B) → β
34. Angle(B, M, C) → γ
35. Segment(A, M_C) → f_1
36. Segment(B, M'_C) → g_1
37. Segment(B, M_A) → h_1
38. Segment(C, M'_A) → i_1
39. Segment(A, M_B) → j_1
40. Segment(C, M'_B) → k_1
41. Circle(A, B, C') → p_1
42. Circle(A', B, C) → q_1
43. Circle(A, B', C) → r_1