单位圆与几何构造

GeoGebra 命令及参数

1. Corner(text1, 4) → I
2. Corner(text1, 3) → F
3. Corner(text1, 1) → D
4. Midpoint(D, F) → G
5. Circle(A, B) → c
6. Ray(A, C) → f
7. Corner(text1, 2) → H
8. Polygon(I, D, H, F) → poly1, i, d, h, f_1
9. Ray(G, M) → g
10. Segment(A, C) → j
11. Angle(B, A, C) → α
12. AngularBisector(B, A, C) → m
13. Corner(text3, 1) → O
14. Corner(text3, 3) → P
15. Segment(O, P) → n
16. Circle(A, n) → p
17. Vector(H, D) → u
18. Segment((-1, 0), (1, 0)) → q
19. Segment((0, 1), (0, -1)) → r
20. Intersect(e, f, 1) → J
21. Segment(R, C) → s
22. Segment(C, N) → b
23. Midpoint(R, C) → S
24. Midpoint(N, C) → T
25. Text(x(C), S + (Corner[text5, 1] - Corner[text5, 3]) / 2) → text7
26. Text(x(C), S + (0, 0.03) + (Corner[text5, 4] - Corner[text5, 3]) / 2) → text8
27. Text(y(C), T + Corner[text6, 4] - Corner[text6, 3]) → text9
28. Text(y(C), T + (0.02, 0)) → text10
29. Text(y(C), T + Corner[text6, 4] - Corner[text6, 3] - (0.06, 0)) → text11