抛物线的反射性质与距离关系

GeoGebra 命令及参数

1. Sequence((k, 8), k, -5, 5) → l1
2. Sequence((k, (k^(2) / 4 * p)), k, -5, 5) → l2
3. Point(l1) → A
4. Point(l2) → B
5. Segment(A, B) → g
6. Point(l2) → C
7. Point(l1) → D
8. Segment(D, C) → h
9. Point(l1) → E
10. Point(l2) → G
11. Segment(E, G) → i
12. Point(l2) → H
13. Point(l1) → I
14. Segment(I, H) → j
15. Point(l1) → J
16. Point(l2) → K
17. Segment(J, K) → k
18. Point(l2) → L
19. Point(l1) → M
20. Segment(M, L) → l
21. Point(l2) → N
22. Point(l1) → O
23. Segment(O, N) → m
24. Point(l2) → P
25. Point(l1) → Q
26. Segment(Q, P) → n
27. Point(l2) → R
28. Point(l1) → S
29. Segment(S, R) → q
30. Point(l2) → T
31. Point(l1) → U
32. Segment(U, T) → r
33. Point(g) → V
34. Point(h) → W
35. Point(i) → Z
36. Point(j) → A_1
37. Point(k) → B_1
38. Point(l) → C_1
39. Point(m) → D_1
40. Point(n) → E_1
41. Point(q) → F_1
42. Point(r) → G_1
43. Segment(B, F) → s
44. Segment(C, F) → t
45. Segment(G, F) → a
46. Segment(H, F) → b
47. Segment(K, F) → c
48. Segment(L, F) → d
49. Segment(N, F) → e
50. Segment(P, F) → f_1
51. Segment(R, F) → g_1
52. Segment(T, F) → h_1
53. Point(s) → H_1
54. Point(t) → I_1
55. Point(a) → J_1
56. Point(b) → K_1
57. Point(c) → L_1
58. Point(d) → M_1
59. Point(e) → N_1
60. Point(f_1) → O_1
61. Point(g_1) → P_1
62. Point(h_1) → Q_1