单位圆 by Mr Isbester

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(f) → B
3. Segment(A, B) → g
4. OrthogonalLine(B, xAxis) → h
5. Intersect(h, xAxis) → C
6. Segment(A, C) → i
7. Segment(C, B) → j
8. Angle(C, A, B) → θ
9. Intersect(f, xAxis, 2) → D
10. OrthogonalLine(B, j) → k
11. Intersect(f, k, 2) → E
12. Segment(E, B) → l
13. OrthogonalLine(C, i) → m
14. Intersect(f, h, 2) → F
15. Segment(F, C) → n
16. Point(xAxis) → G
17. Angle(G, A, B) → α
18. Point(xAxis) → H
19. Point(xAxis) → J
20. Point(yAxis) → K