动态圆锥与金字塔

GeoGebra 命令及参数

1. Line(B, A) → f
2. OrthogonalLine(E, f) → g
3. Point(g) → F
4. Tangent(F, c) → h, i
5. Intersect(c, h, 1) → C
6. Intersect(c, i, 1) → D
7. Segment(F, C) → j
8. Segment(F, D) → k
9. Line(F, f) → l
10. Segment(F, E) → r
11. Point(r) → K
12. OrthogonalLine(K, r) → t
13. Segment(K, E) → e
14. Line(G, H) → m
15. Line(I, G) → n
16. Line(H, n) → p
17. Line(I, m) → q
18. Circle(G, I) → d
19. Intersect(d, n, 2) → J
20. Line(J, m) → s
21. Intersect(p, q) → L
22. Intersect(p, s) → M
23. LineBisector(H, G) → f_1
24. Intersect(m, f_1) → N
25. Intersect(l, f_1) → O
26. Segment(I, J) → g_1
27. Segment(J, M) → h_1
28. Segment(M, L) → i_1
29. Segment(L, I) → j_1
30. Segment(I, O) → k_1
31. Segment(J, O) → l_1
32. Segment(M, O) → m_1
33. Segment(L, O) → n_1
34. Polygon(I, J, M, L) → poly1, i_2, j_2, m_2, l_2
35. Segment(O, N) → p_1
36. Intersect(t, p_1) → P
37. Intersect(t, k_1) → Q
38. Intersect(t, n_1) → R
39. Line(Q, g_1) → q_1
40. Line(R, i_1) → r_1
41. Intersect(q_1, l_1) → S
42. Intersect(r_1, m_1) → T
43. Segment(S, T) → s_1
44. Segment(T, R) → t_1
45. Segment(R, Q) → a_1
46. Segment(Q, S) → b_1