圆及其性质探索

GeoGebra 命令及参数

1. Circle(A, B) → c
2. Segment(A, B) → a
3. PointIn(b) → C
4. Point(c) → F
5. Segment(A, F) → h
6. Point(c) → G
7. Point(c) → H
8. Segment(G, H) → i
9. Line(H, A) → j
10. Circle(A, B) → k
11. Point(c) → D
12. Rotate(D, 2°, A) → D'
13. CircleArc(A, D', D) → f
14. Point(f) → J
15. CircleArc(A, J, D) → p
16. Point(p) → K
17. Line(K, J) → m
18. Point(c) → E
19. Tangent(E, c) → d,
20. PointIn(b) → L
21. Tangent(L, c) → e, g
22. Point(k) → I
23. Line(I, A) → l
24. Intersect(k, l, 2) → M
25. Segment(I, M) → n