三角形中的循环点

GeoGebra 命令及参数

1. Polygon(A, B, C) → d1, c, a, b
2. Circle(A, B, C) → k_1
3. Center(k_1) → D_{1}
4. Midpoint(c) → M
5. PointIn(d1) → P
6. Line(B, P) → f
7. Line(A, P) → g
8. Intersect(f, b) → E
9. Intersect(g, a) → D
10. Segment(B, E) → h
11. Segment(A, D) → i
12. Line(C, P) → j
13. Intersect(j, c) → F
14. Line(E, D) → k
15. Intersect(k_1, k, 1) → G
16. Intersect(k_1, k, 2) → H
17. Segment(C, F) → l
18. Circle(G, M, F) → k_2
19. Line(A, B) → m
20. Intersect(k, m) → S