三个正方形排列的动态演示

GeoGebra 命令及参数

1. Polygon(A, B, 4) → poly1, f, g, h, i, C, D
2. Polygon(B, E, 4) → poly2, j, k, l, m, G, H
3. Polygon(E, F, 4) → poly3, n, p, q, r, I, J
4. Segment(A, B) → s
5. Segment(B, C) → t
6. Segment(C, D) → b
7. Segment(D, A) → c
8. Segment(C, G) → d
9. Segment(G, E) → e
10. Segment(E, B) → f_1
11. Segment(G, I) → g_1
12. Segment(I, F) → h_1
13. Segment(F, E) → i_1
14. Angle(C, B, A) → α
15. Angle(D, C, B) → β
16. Angle(A, D, C) → γ
17. Angle(C, G, E) → δ
18. Angle(G, E, B) → ε
19. Angle(I, F, E) → ζ
20. Circle(A, (0.25 * b)) → c_1
21. Circle(B, (0.25 * b)) → d_1
22. Circle(E, (0.25 * b)) → e_1
23. Segment(E, I) → j_1
24. Segment(B, I) → k_1
25. Segment(A, I) → l_1
26. Intersect(c_1, l_1, 1) → K
27. Intersect(c_1, s, 1) → L
28. Intersect(d_1, k_1, 1) → M
29. Intersect(d_1, f_1, 1) → N
30. Intersect(e_1, j_1, 1) → O
31. Intersect(e_1, i_1, 1) → P
32. Intersect(e_1, e, 1) → Q
33. Dilate(A, If[0 < o ≤ 1, 1 - o, 0], I) → A'
34. Segment(A, A') → m_1
35. Dilate(I, If[1 < o ≤ 2, 2 - o, 0], B) → I'
36. Dilate(E, If[2 < o ≤ 3, 3 - o, 0], I) → E'
37. Dilate(B, If[6 < o ≤ 7, 7 - o, 0], E) → B'
38. Vector(B, B') → u
39. Angle(L, A, K) → ι
40. Dilate(A, If[8 < o ≤ 9, 9 - o, 0], E) → A'_1
41. Vector(A, A'_1) → v
42. Line(U, S) → n_1
43. Intersect(n_1, m_1) → V
44. Line(T, V) → p_1
45. Intersect(p_1, d) → W
46. Segment(V, W) → q_1
47. Circle(V, (0.43 * q_1)) → r_1
48. Dilate(U, If[1 < o ≤ 2, 2 - o, 0], S) → U'
49. Segment(U, U') → s_1
50. Line(A, Z) → t_1
51. Intersect(r_1, t_1) → A_1, B_1
52. Intersect(r_1, p_1) → C_1, D_1
53. Dilate(T, If[2 < o ≤ 3, 3 - o, 0], W) → T'
54. Segment(T, T') → a_1
55. Rotate(C_1, If[3 < o ≤ 4, ((-(o - 3)) * π / 2), ((-π)) / 2], V) → E_1
56. CircleSector(V, E_1, C_1) → c_2
57. Rotate(c_2, If[5 < o ≤ 6, ((-(o - 5)) * π / 2), ((-π)) / 2], V) → d_2
58. Rotate(C_1, If[6 < o ≤ 7, ((o - 6) * π / 4), π / 4], V) → F_1
59. CircleSector(V, C_1, F_1) → e_2
60. Rotate(e_2, If[7.5 < o ≤ 8.5, ((o - 7.5) * π / 4), π / 4], V) → f_2