圆的弦的垂线性质探索

GeoGebra 命令及参数

1. Circle(A, B) → c
2. Point(c) → C
3. Segment(B, C) → a
4. Point(c) → D
5. Circle(D, Segment[C, B]) → d
6. Intersect(c, d, 1) → E
7. Segment(A, B) → b
8. Segment(A, C) → e
9. Segment(A, D) → f
10. Segment(A, E) → g
11. Segment(D, E) → h
12. Angle(B, A, C) → α
13. Angle(D, A, E) → β
14. OrthogonalLine(A, a) → i
15. OrthogonalLine(A, h) → j
16. Intersect(j, h) → F
17. Intersect(i, a) → G
18. Angle(A, G, B) → γ
19. Angle(A, F, D) → δ
20. Distance(C, G) → distanceCG
21. Distance(G, B) → distanceGB
22. Distance(D, F) → distanceDF
23. Distance(E, F) → distanceEF
24. Distance(A, G) → distanceAG
25. Distance(A, F) → distanceAF