2个椭圆上的Poncelet三边形（顺序3）

GeoGebra 命令及参数

1. Ray((0, 0), (sin(α), cos(α))) → k
2. Intersect(d, k) → A,
3. Tangent(A, c) → e, f
4. Intersect(d, e) → B, C
5. Intersect(d, f) → D, E
6. Segment(C, E) → g
7. Segment(A, C) → h
8. Segment(C, E) → i
9. Segment(E, A) → j
10. Point(c) → F
11. Point(c) → G
12. Point(c) → H
13. Point(c) → I
14. Point(c) → J
15. Point(d) → K
16. Point(d) → L
17. Conic(C', E', K', L', A') → p
18. Conic(F', G', H', I', J') → q
19. Segment(C', A') → r
20. Segment(A', E') → s
21. Segment(E', C') → t