四边形G

GeoGebra 命令及参数

1. Segment(A, B) → a
2. OrthogonalLine(B, a) → b
3. OrthogonalLine(A, a) → c
4. Point(c) → C
5. Line(C, a) → d
6. Intersect(b, d) → D
7. Polygon(A, C, D, B) → poly1, a_1, c_1, d_1, b_1
8. Segment(A, D) → e
9. Segment(B, C) → f
10. Intersect(e, f) → E
11. Angle(A, B, E) → α
12. Angle(E, A, B) → β
13. Angle(D, C, E) → γ
14. Angle(E, D, C) → δ
15. Angle(C, A, E) → ε
16. Angle(E, C, A) → ζ
17. Angle(E, B, D) → η
18. Angle(B, D, E) → θ
19. Angle(B, E, A) → ι
20. Angle(C, E, D) → κ
21. Angle(A, E, C) → λ
22. Angle(D, E, B) → μ