菱形复选框

GeoGebra 命令及参数

1. Segment(A, B) → f
2. Circle(B, A) → c
3. Point(c) → C
4. Segment(C, B) → g
5. Circle(C, B) → d
6. Circle(A, B) → e
7. Intersect(d, e, 2) → D
8. Segment(A, D) → h
9. Segment(D, C) → i
10. Segment(D, B) → j
11. Segment(C, A) → k
12. Intersect(j, k) → E
13. Angle(B, E, C) → α
14. Angle(E, B, A) → β
15. Angle(E, A, D) → γ
16. Angle(B, A, E) → δ
17. Angle(A, D, E) → ε
18. Angle(E, D, C) → ζ
19. Angle(D, C, E) → η
20. Angle(E, C, B) → θ
21. Angle(C, B, E) → ι
22. Segment(D, B) → m
23. Segment(C, A) → n
24. Polygon(D, C, B, A) → poly1, d_1, c_1, b_1, a_1