绘制双曲线 by Jennifer Silverman

GeoGebra 命令及参数

1. Circle(A_2, w) → c
2. Circle(A_2, h) → d
3. Line(A_2, xAxis) → e
4. Intersect(c, e, 2) → B_2
5. Rotate(B_2, α, A_2) → B
6. Tangent(B, c) → f,
7. Line(B, A_2) → g
8. Intersect(c, g, 2) → A
9. Tangent(A, c) → h_2,
10. Circle(A, h) → k
11. Circle(A, Radius[c]) → p
12. Circle(B, Radius[d]) → q
13. Circle(A, w) → r
14. Circle(B, h) → s
15. Intersect(r, s, 1) → I
16. Hyperbola(A, B, I) → t
17. Point(t) → D
18. Intersect(t, e, 2) → E
19. OrthogonalLine(E, e) → i
20. Intersect(t, e, 1) → F
21. OrthogonalLine(F, e) → j
22. Distance(E, F) → distanceEF
23. Circle(A_2, Segment[A_2, B]) → c_1
24. Intersect(c_1, j, 1) → G
25. OrthogonalLine(G, j) → l
26. Intersect(c_1, j, 2) → H
27. OrthogonalLine(H, j) → m
28. Intersect(c_1, i, 1) → J
29. Intersect(c_1, i, 2) → K
30. Polygon(H, G, J, K) → poly1, h_1, g_1, j_1, k_1
31. Line(J, H) → n
32. Line(G, K) → a_1
33. Segment(D, A) → s_1
34. Segment(D, B) → s_2
35. Segment(A_2, F) → a
36. Distance(E, F) → a_2
37. OrthogonalLine(A_2, a) → b_2
38. Intersect(g_1, b_2) → L
39. Segment(A_2, L) → b
40. Circle(A_1, g_2) → h_3
41. Circle(B_1, e_1) → k_2
42. Intersect(h_3, k_2, 1) → C_1
43. Ellipse(A_1, B_1, C_1) → p_1
44. Line(A_1, B_1) → i_1
45. Point(p_1) → B'_1
46. Segment(A_1, B'_1) → j_2
47. Segment(B_1, B'_1) → l_1
48. Segment(A_1, B_1) → a_3
49. Midpoint(a_3) → G_1
50. OrthogonalLine(G_1, a_3) → b_3
51. Intersect(p_1, b_3) → F_1, E_1
52. Line(A_1, B_1) → c_2
53. Intersect(p_1, c_2) → C_2, D_1
54. Distance(G_1, D_1) → distanceGD_1
55. Distance(G_1, E_1) → distanceGE_1
56. Segment(G_1, E_1) → b_4
57. Segment(G_1, D_1) → a_4