半圆中的角 by James Monaghan

GeoGebra 命令及参数

1. Circle(O, S) → c_1
2. Point(c_1) → T
3. Point(c_1) → U
4. Segment(S, U) → d_1
5. Segment(T, U) → e_1
6. Segment(T, S) → a_1
7. Angle(T, U, S) → λ_1
8. Intersect(c_1, a_1) → V, W
9. Polygon(E_1, H_1, G_1, F_1) → poly1, e_2, h_2, g_2, f_2
10. Angle(G_1, F_1, E_1) → λ
11. Angle(E_1, H_1, G_1) → ξ
12. Angle(F_1, E_1, H_1) → ο
13. Angle(H_1, G_1, F_1) → ρ
14. Angle(T, U, S) → δ