黑线：动态几何构造中的周长与三角随机变量

GeoGebra 命令及参数

1. Circle(A, 1) → c
2. Point(c) → B
3. Point(c) → C
4. Segment(C, A) → f
5. Segment(A, B) → g
6. Circle(B, 1) → d
7. Point(d) → D
8. Segment(D, B) → h
9. Circle(D, 1) → e
10. Point(e) → E
11. Segment(D, E) → i
12. Circle(E, 1) → k
13. Point(k) → F
14. Segment(F, E) → j
15. Circle(F, 1) → p
16. Point(p) → G
17. Segment(F, G) → l
18. Circle(G, 1) → q
19. Point(q) → H
20. Segment(H, G) → m
21. Circle(H, 1) → r
22. Point(r) → I
23. Segment(H, I) → n
24. Circle(I, 1) → s
25. Point(s) → J
26. Segment(J, I) → t
27. Circle(J, 1) → c_1
28. Point(c_1) → K
29. Segment(K, J) → a
30. Circle(K, 1) → d_1
31. Point(d_1) → L
32. Segment(L, K) → b
33. Circle(L, 1) → e_1
34. Point(e_1) → M
35. Segment(M, L) → f_1
36. Circle(M, 1) → g_1
37. Point(g_1) → N
38. Segment(N, M) → h_1
39. Circle(N, 1) → k_1
40. Point(k_1) → O
41. Segment(O, N) → i_1
42. Circle(O, 1) → p_1
43. Point(p_1) → P
44. Segment(O, P) → j_1
45. Circle(P, 1) → q_1
46. Point(q_1) → Q
47. Segment(Q, P) → l_1
48. Circle(Q, 1) → r_1
49. Point(r_1) → R
50. Segment(Q, R) → m_1
51. Circle(R, 1) → s_1
52. Point(s_1) → S
53. Segment(S, R) → n_1
54. Circle(S, 1) → t_1
55. Point(t_1) → T
56. Segment(S, T) → a_1
57. Circle(T, 1) → c_2
58. Point(c_2) → U
59. Segment(U, T) → b_1
60. Circle(U, 1) → d_2
61. Point(d_2) → V
62. Segment(U, V) → f_2
63. Circle(V, 1) → e_2
64. Point(e_2) → W
65. Segment(V, W) → g_2
66. Circle(W, 1) → last_1
67. Circle(C, 1) → last_2
68. Intersect(last_1, last_2) → Z, A_1, ,
69. Segment(W, A_1) → h_2
70. Segment(A_1, C) → i_2