风筝形几何构造：从基本线段到多边形的动态演示

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Circle(A, B) → c
3. Circle(B, A) → d
4. Intersect(c, d, 2) → C
5. Polygon(A, C, B) → poly1, b, a_1, c_1
6. OrthogonalLine(A, b) → e
7. OrthogonalLine(B, a_1) → f
8. Intersect(e, f) → D
9. Polygon(D, A, C, B) → poly2, d_1, a_2, c_2, b_1
10. Polygon(D, A, C, B) → poly3, d_2, a_3, c_3, b_2
11. Polygon(D, A, C, B) → poly4, d_3, a_4, c_4, b_3
12. Angle(poly4) → α, β, γ, δ
13. Segment(D, C) → g
14. Intersect(a, c_1) → E
15. Intersect(a, c_1) → F
16. Intersect(g, a) → G
17. Segment(A, G) → h
18. Segment(G, B) → i
19. Angle(B, G, D) → ε