St Peters Square椭圆与椭圆的几何关系

GeoGebra 命令及参数

1. Point(xAxis) → E
2. LineBisector(C, E) → f
3. LineBisector(E, D) → g
4. Circle(F, E) → c
5. Mirror(c, yAxis) → c'
6. Intersect(c, c', 2) → G
7. Intersect(c, c', 1) → H
8. Point(xAxis) → I
9. Line(F, G) → h
10. Line(I, G) → i
11. Line(I, H) → j
12. Line(H, F) → k
13. Intersect(c', j, 2) → J
14. Intersect(c, k) → K, L
15. Intersect(c', i, 2) → M
16. Intersect(c, h) → N, O
17. CircleArc(F, O, L) → d
18. CircleArc(I, J, M) → e
19. CircleArc(H, L, J) → p
20. CircleArc(G, M, O) → q
21. Ray(G, M) → l
22. Ray(G, O) → m
23. Ray(H, L) → n
24. Ray(H, J) → r
25. Polygon(G, I, F) → driehoek1, f_1, g_1, i_1
26. Line(I, F) → s
27. Line(G, H) → t
28. Point(d) → P
29. Ray(F, P) → h_1
30. Intersect(p, t, 1) → Q
31. Intersect(e, s) → R,
32. Mirror(R, t) → R'
33. Circle(Q, x(R')) → c_1
34. Intersect(c_1, s) → S, T
35. Ellipse(S, T, O) → d_1