n边形外角和

GeoGebra 命令及参数

1. Ray(A, B) → a
2. Ray(B, C) → b
3. Ray(C, D) → c
4. Ray(D, E) → d
5. Ray(E, F) → e
6. Ray(F, A) → f
7. Point(d) → G
8. Point(e) → H
9. Point(f) → I
10. Point(a) → J
11. Point(b) → K
12. Point(c) → L
13. Angle(F, E, G) → α
14. Angle(A, F, H) → β
15. Angle(B, A, I) → γ
16. Angle(C, B, J) → δ
17. Angle(D, C, K) → ε
18. Angle(E, D, L) → ζ
19. Polygon(A, B, C, D, E, F) → poly1, a_1, b_1, c_1, d_1, e_1, f_1