风筝图形的几何性质探究

GeoGebra 命令及参数

1. Segment(A, C) → a
2. Point(a) → O
3. OrthogonalLine(O, a) → b
4. Circle(O, r) → d
5. Intersect(d, b) → D, B
6. Polygon(D, A, B, C) → P, d_1, a_1, e, b_1
7. Segment(D, O) → c
8. Segment(O, B) → f
9. Angle(B, O, A) → α
10. Angle(O, A, B) → β
11. Angle(A, D, O) → γ
12. Segment(A, O) → g
13. Segment(O, C) → h
14. Segment(A_1, C_1) → a_2
15. Point(a_2) → O_1
16. OrthogonalLine(O_1, a_2) → b_2
17. Circle(O_1, r) → d_2
18. Intersect(d_2, b_2) → D_1, B_1
19. Segment(D_1, O_1) → c_1
20. Angle(C, D, O) → γ_1
21. Segment(A_1, O_1) → g_1
22. Segment(A_2, C_2) → a_3
23. Point(a_3) → O_2
24. OrthogonalLine(O_2, a_3) → b_3
25. Circle(O_2, r) → d_3
26. Intersect(d_3, b_3) → D_2, B_2
27. Segment(O_2, B_2) → f_1
28. Angle(B_2, O_2, A_2) → α_1
29. Angle(O, A, D) → β_1
30. Angle(A, D, C) → δ
31. Angle(D, A, B) → ε
32. Angle(A, B, C) → ζ
33. Angle(D, C, B) → η