8.3 内接多边形与半圆定理练习

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → O
2. Circle(O, 10) → circle
3. Point(circle) → A
4. Tangent(A, circle) → a,
5. Rotate(O, 270*°, A) → O'
6. Angle(O', A, O) → ρ
7. Ray(A, O) → b
8. Intersect(circle, b, 2) → B
9. Point(circle) → D
10. Point(circle) → C
11. Polygon(A, B, C) → polígono1, c, a_1, b_1
12. Angle(C, B, A) → β
13. Point(circle) → E
14. CircumcircleArc(C, E, B) → d
15. LineBisector(C, B) → e
16. Point(e) → F
17. Polygon(A, F, B) → polígono2, b_2, a_2, f
18. Polygon(A, C, B) → polígono3, b_3, a_3, c_1
19. Polygon(A, F, B) → polígono4, b_4, a_4, f_1
20. Intersect(e, a_1) → G
21. Segment(C, G) → g
22. Segment(G, B) → h
23. CircumcircleArc(C, E, F) → k
24. CircumcircleArc(F, D, B) → p
25. Angle(A, C, B) → ϕ
26. Angle(A, F, B) → θ
27. Angle(F, A, C) → α
28. Angle(B, A, F) → δ
29. Angle(F, A, C) → γ
30. Angle(B, A, F) → ε
31. CircumcircleArc(C, E, F) → q
32. CircumcircleArc(F, D, B) → r
33. Segment(C, A) → i
34. Segment(A, F) → j
35. Point(q) → H
36. Segment(F, B) → l
37. Segment(C, F) → m