圆柱—圆锥相交的几何构造与演示

GeoGebra 命令及参数

1. OrthogonalLine(A, xAxis) → f
2. Ray(A, B) → g
3. Intersect(g, xAxis) → C
4. Segment(C, A) → h
5. Mirror(C, f) → C'
6. Mirror(A, f) → A'
7. Segment(C', A') → h'
8. Point(f) → D
9. Circle(D, E) → c
10. Line(C, f) → i
11. Point(f) → F
12. Line(F, xAxis) → j
13. Intersect(j, i) → G
14. Circle(F, G) → d
15. Tangent(f, c) → k, l
16. Tangent(j, d) → m, n
17. Point(j) → H
18. Line(H, yAxis) → p
19. Intersect(p, n) → I
20. Circle(H, I) → e
21. Tangent(p, e) → q, r
22. Intersect(q, xAxis) → J
23. Intersect(r, xAxis) → K
24. Line(A, xAxis) → s
25. Intersect(s, p) → L
26. Segment(J, L) → t
27. Segment(L, K) → a
28. Tangent(xAxis, c) → b, f_1
29. Line(M, xAxis) → g_1
30. Intersect(g_1, t) → N
31. Line(N, p) → h_1
32. Intersect(h_1, j) → O
33. Circle(H, O) → c_1
34. Tangent(j, c_1) → i_1, j_1
35. Intersect(i_1, j) → P
36. Intersect(j, i_1) → Q
37. Intersect(i_1, f) → R
38. Circle(F, R) → d_1
39. Intersect(c, g_1) → S, T
40. Line(S, f) → k_1
41. Intersect(d_1, k_1) → U, V
42. Line(T, l) → l_1
43. Intersect(d_1, l_1) → W, Z
44. Line(V, j) → m_1
45. Intersect(m_1, p) → A_1
46. Circle(H, A_1) → e_1
47. Tangent(p, e_1) → n_1, p_1
48. Intersect(g_1, n_1) → B_1
49. Intersect(g_1, p_1) → C_1
50. Intersect(m, k) → D_1
51. Intersect(k, n) → E_1
52. Intersect(l, m) → F_1
53. Intersect(n, l) → G_1
54. Segment(D_1, F_1) → q_1
55. Segment(F_1, G_1) → r_1
56. Segment(G_1, E_1) → s_1
57. Segment(E_1, D_1) → t_1
58. Intersect(b, q) → H_1
59. Intersect(b, r) → I_1
60. Intersect(f_1, q) → J_1
61. Intersect(f_1, r) → K_1
62. Segment(H_1, J_1) → a_1
63. Segment(J_1, K_1) → b_1
64. Segment(K_1, I_1) → f_2
65. Segment(I_1, H_1) → g_2
66. Intersect(g_1, a_1) → L_1
67. Intersect(g_1, f_2) → M_1
68. Segment(L_1, M_1) → h_2
69. Intersect(g_1, h) → N_1
70. Intersect(g_1, h') → O_1
71. Segment(N_1, O_1) → i_2
72. Segment(C, C') → j_2
73. Segment(J, K) → k_2