动态风筝构造与变换

GeoGebra 命令及参数

1. Segment(A, B) → a
2. Circle(A, B) → c
3. Segment(A, C) → b
4. Mirror(B, b) → D
5. Polygon(A, B, C, D) → poly1, a_1, b_1, c_1, b'
6. Vector(A, E) → u
7. Translate(A, u) → A'
8. Translate(B, u) → B'_1
9. Translate(C, u) → C'
10. Translate(D, u) → B''
11. Polygon(A', B'_1, C', B'') → poly1', a', b'_1, c', b''
12. Angle(C, A, DD) → α
13. Rotate(A', α, E) → A''
14. Rotate(B'_1, α, E) → F
15. Rotate(C', α, E) → C''
16. Rotate(B'', α, E) → B'''
17. Polygon(A'', F, C'', B''') → poly1'', a'', f, c'', b'''
18. OrthogonalLine(B, a_1) → d
19. Circle(B, A) → e