抛物线、平行线与交点

GeoGebra 命令及参数

1. Polygon(A, B, C, D, E, F) → poly1, a, b, c, d, e, f
2. Line(E, B) → g
3. Line(A, D) → h
4. Line(F, C) → i
5. Midpoint(E, A) → G
6. Midpoint(D, B) → H
7. Midpoint(C, A) → I
8. Midpoint(D, F) → J
9. Midpoint(C, E) → K
10. Midpoint(B, F) → L
11. Parabola(J, e) → k
12. Parabola(J, d) → p
13. Parabola(K, d) → q
14. Parabola(K, c) → r
15. Parabola(H, c) → s
16. Parabola(H, b) → t
17. Parabola(I, b) → c_1
18. Parabola(I, a) → d_1
19. Parabola(L, a) → e_1
20. Parabola(L, f) → f_1
21. Parabola(G, f) → g_1
22. Parabola(G, e) → h_1