纸折双曲线互动演示

GeoGebra 命令及参数

1. Circle(F_1, r) → c
2. Point(c) → A
3. Segment(A, F_2) → f
4. LineBisector(f) → g
5. Line(A, F_1) → h
6. Intersect(g, h) → B
7. Line(F_2, B) → i
8. Hyperbola(F_1, F_2, B) → d
9. Segment(F_1, A) → j
10. Segment(A, B) → k
11. Segment(B, F_2) → l
12. Segment(B, F_2) → m
13. Segment(F_1, F_2) → n
14. Midpoint(F_1, F_2) → C
15. Intersect(d, n, 2) → V_1
16. Intersect(d, n, 1) → V_2
17. Segment(C, V_2) → p
18. Segment(V_1, C) → q
19. Segment(F_1, C) → s
20. Circle(V_1, b) → e
21. Rotate(F_1, (-(90°)), C) → D
22. Rotate(F_2, (-(90°)), C) → E
23. Segment(D, E) → n'
24. Intersect(e, n', 1) → F
25. Line(V_1, n') → t
26. OrthogonalLine(F, t) → a
27. Line(V_2, t) → f_1
28. Rotate(F_1, 90°, C) → G
29. Rotate(F_2, 90°, C) → H
30. Segment(G, H) → n'_1
31. Intersect(e, n'_1) → I, J
32. Line(I, a) → g_1
33. Intersect(t, a) → K
34. Intersect(a, f_1) → L
35. Intersect(f_1, g_1) → M
36. Intersect(t, g_1) → N
37. Polygon(N, K, L, M) → poly1, n_1, k_1, l_1, m_1
38. Line(N, L) → h_1
39. Line(K, M) → i_1
40. Line(K, L) → j_1
41. Line(M, N) → p_1