角度测量（度分秒到弧度）

GeoGebra 命令及参数

1. Point(Circle[A, 5]) → B
2. Polygon(A, B, C, D, E, F, B, A) → poly1, a, b, c, d, e, f, b_1, a_1
3. Sequence(((6 * cos(θ°)), (6 * sin(θ°))), θ, 0, 359) → list1
4. Point(list1) → P
5. Point(list1) → Q
6. Angle(P, (0, 0), Q) → α
7. Segment((0, 0), P) → g
8. Segment((0, 0), Q) → h
9. Intersect(g, h) → G
10. Circle(G, P) → k
11. Circle(G, H) → p
12. Ray(G, Q) → j
13. Intersect(k, g, 1) → I
14. Ray(G, I) → l
15. Point(j) → J
16. OrthogonalLine(J, g) → m
17. Intersect(m, l) → K
18. Angle(J, K, G) → β
19. Segment(J, K) → n
20. Intersect(p, j) → L,
21. Intersect(p, l) → M,
22. Segment(G, J) → q
23. Segment(G, K) → s
24. CircleArc(G, M, L) → t
25. CircleArc(G, P, Q) → c_1
26. Segment(G, M) → f_1
27. Segment(G, L) → g_1
28. Segment(G, P) → i_1