蒙提霍尔问题

GeoGebra 命令及参数

1. Element({1, 2, 3} \ {CarPos, door}, 1) → MontyDoor
2. Point(xAxis) → A
3. Point(xAxis) → B
4. OrthogonalLine(A, xAxis) → a
5. OrthogonalLine(B, xAxis) → b
6. Point(a) → C
7. OrthogonalLine(C, a) → c
8. Intersect(b, c) → D
9. Point(xAxis) → E
10. OrthogonalLine(E, xAxis) → d
11. Intersect(c, d) → F
12. Midpoint(C, A) → G
13. Midpoint(C, G) → H
14. Midpoint(B, D) → I
15. Midpoint(E, F) → J
16. Midpoint(I, D) → K
17. Midpoint(F, J) → L
18. Line(A, B) → e
19. Midpoint(G, A) → P
20. Circle(C, P) → k
21. Intersect(k, c, 1) → Q
22. OrthogonalLine(Q, c) → j
23. Circle(C, G) → h
24. Intersect(h, a, 2) → O
25. OrthogonalLine(O, a) → i
26. Intersect(j, i) → R
27. Vector(R, Q) → u
28. OrthogonalLine(P, a) → f
29. Intersect(b, f) → M
30. Circle(D, M) → g
31. Intersect(g, c, 1) → N
32. OrthogonalLine(N, c) → l
33. Intersect(i, l) → S
34. Vector(S, N) → v
35. Intersect(d, f) → T
36. Circle(F, T) → p
37. Intersect(p, c, 1) → U
38. OrthogonalLine(U, c) → m
39. Intersect(i, m) → V
40. Vector(V, U) → w
41. Circle(R, O) → q
42. Intersect(q, i, 2) → Z
43. Circle(Z, R) → r
44. Intersect(r, i, 2) → W
45. Intersect(b, i) → A_1
46. Circle(S, A_1) → s
47. Intersect(s, i, 2) → B_1
48. Midpoint(O, R) → F_1
49. Midpoint(Z, W) → G_1
50. Circle(B_1, S) → t
51. Intersect(t, i, 2) → H_1
52. Midpoint(S, A_1) → I_1
53. Midpoint(H_1, B_1) → J_1
54. Intersect(d, i) → C_1
55. Midpoint(V, C_1) → D_1
56. Circle(V, C_1) → c_1
57. Intersect(c_1, i, 2) → E_1
58. Circle(E_1, V) → d_1
59. Intersect(d_1, i, 2) → K_1
60. Midpoint(E_1, K_1) → L_1
61. Circle(A, G) → e_1
62. Intersect(e_1, a, 1) → M_1
63. OrthogonalLine(M_1, a) → n
64. Intersect(j, n) → N_1
65. Intersect(l, n) → O_1
66. Intersect(m, n) → P_1
67. Intersect(e, j) → Q_1
68. Vector(N_1, Q_1) → z
69. Intersect(e, l) → R_1
70. Vector(O_1, R_1) → u_1
71. Intersect(e, m) → S_1
72. Vector(P_1, S_1) → v_1