圆内割线关系

GeoGebra 命令及参数

1. Circle(X, 3) → c
2. Point(c) → A
3. Point(c) → B
4. Point(c) → C
5. Point(c) → D
6. Line(A, B) → f
7. Line(C, D) → g
8. CircleArc(X, A, C) → d
9. CircleArc(X, C, B) → e
10. CircleArc(X, B, D) → h
11. CircleArc(X, D, A) → k
12. Segment(A, X) → i
13. Segment(X, D) → j
14. Segment(X, B) → l
15. Segment(X, C) → m
16. Angle(C, X, B) → α
17. Angle(B, X, D) → β
18. Angle(D, X, A) → γ
19. Angle(A, X, C) → δ
20. Intersect(f, g) → E
21. Angle(A, E, C) → ε
22. Angle(C, E, B) → ζ
23. Angle(B, E, D) → η
24. Angle(D, E, A) → θ