圆周角定理 by James Monaghan

GeoGebra 命令及参数

1. Polygon(E_1, H_1, G_1, F_1) → poly1, e_2, h_2, g_2, f_2
2. Angle(G_1, F_1, E_1) → λ
3. Angle(E_1, H_1, G_1) → ξ
4. Angle(F_1, E_1, H_1) → ο
5. Angle(H_1, G_1, F_1) → ρ
6. Circle(J_2, K_2) → r_2
7. Point(r_2) → L_2
8. Point(r_2) → M_2
9. Segment(L_2, M_2) → s_2
10. Segment(K_2, L_2) → t_2
11. Segment(K_2, M_2) → i_3
12. Tangent(K_2, r_2) → j_3,
13. Point(j_3) → N_2
14. Point(j_3) → T_2
15. Segment(N_2, T_2) → k_3
16. Angle(M_2, K_2, T_2) → τ_1
17. Angle(M_2, L_2, K_2) → υ_1
18. Angle(L_2, K_2, N_2) → ϕ_1
19. Angle(L_2, M_2, K_2) → χ_1