风筝的几何构造 by Mr Duncan

GeoGebra 命令及参数

1. Circle(B_2, 21.43318565057029) → d
2. Circle(C_2, 16.02850007793855) → e
3. Circle(D_2, 21.97966183159147) → f
4. Circle(E_2, 19.85274664077369) → g
5. Circle(F_2, 8.503832872485338) → h
6. Tangent(H, d) → k, l
7. Tangent(I, f) → m, n
8. Tangent(L, g) → p, q
9. Tangent(D, e) → r, s
10. Tangent(K, h) → t, a
11. Intersect(d, l, 1) → M
12. Intersect(d, k, 1) → N
13. Intersect(h, a, 1) → Q
14. Intersect(h, t, 1) → R
15. Intersect(e, s, 1) → C
16. Intersect(e, r, 1) → A
17. Intersect(f, m, 1) → U
18. Intersect(f, n, 1) → V
19. Intersect(g, q, 1) → W
20. Intersect(g, p, 1) → Z
21. Segment(U, I) → b
22. Segment(I, V) → f_1
23. Segment(L, Z) → g_1
24. Segment(W, L) → h_1
25. Segment(K, R) → i_1
26. Segment(K, Q) → j_1
27. Segment(D, C) → k_1
28. Segment(H, N) → l_1
29. Segment(H, M) → m_1
30. Segment(A, D) → q_1
31. Segment(B_2, N) → t_1
32. Segment(B_2, M) → a_1
33. Segment(C_2, A) → b_1
34. Segment(C_2, C) → c_1
35. Segment(F_2, Q) → d_1
36. Segment(F_2, R) → e_1
37. Segment(E_2, W) → f_2
38. Segment(E_2, Z) → g_2
39. Segment(D_2, V) → h_2
40. Segment(D_2, U) → i_2
41. Line(A, k_1) → j_2
42. Midpoint(A, D) → A_1
43. OrthogonalLine(A_1, q_1) → k_2
44. Intersect(j_2, k_2) → B
45. Segment(D, B) → l_2
46. Segment(B, A) → m_2
47. Angle(N, H, M) → α
48. Angle(M, B_2, N) → β
49. Angle(U, I, V) → γ
50. Angle(A, D, C) → δ
51. Segment(E_2, L) → n_2
52. Intersect(g, n_2, 1) → C_1
53. OrthogonalLine(C_1, n_2) → p_2
54. Intersect(p_2, h_1) → D_1
55. Segment(C_1, D_1) → q_2
56. Intersect(p_2, g_1) → E_1
57. Segment(C_1, E_1) → r_2
58. Angle(W, E_2, C_1) → ε
59. Line(R, j_1) → s_2
60. Line(Q, i_1) → t_2
61. Line(F_2, K) → a_2
62. OrthogonalLine(K, a_2) → b_2
63. Intersect(s_2, b_2) → E
64. Intersect(t_2, b_2) → F
65. Segment(R, E) → c_2
66. Segment(E, F) → d_2
67. Segment(F, Q) → e_2
68. Angle(K, F, Q) → ζ
69. Angle(H, M, B_2) → η
70. Angle(B_2, N, H) → θ