筝形折叠 by chris cambré

GeoGebra 命令及参数

1. Polygon(A, C, D, B) → vierhoek1, a, c, d, b
2. Point(yAxis) → P
3. Segment(B, E) → f
4. CircleArc(B, DD, D) → e
5. Polygon(B, A, C, E) → vierhoek2, b_1, a_1, c_1, e_1
6. Polygon(B, E, D) → driehoek1, d_1, b_2, e_2
7. Rotate(B, ((s - 1) * (-180°)), e_1) → B'
8. Rotate(E, ((s - 1) * (-180°)), e_1) → E'
9. Rotate(D, ((s - 1) * (-180°)), e_1) → D'
10. Polygon(B', E', D') → driehoek1', d', b', e'
11. Polygon(B, DD, E) → driehoek2, e_3, b_3, dd
12. Segment(E, C) → g
13. Segment(B, E) → h
14. Segment(F, E) → i
15. CircleArc(E, FF, C) → k
16. Polygon(DD, A, F, E) → vierhoek3, dd_1, a_2, f_1, e_4
17. Polygon(F, C, E) → driehoek3, e_5, f_2, c_2
18. Rotate(F, (((-(s - 3)) * 180))°, f_1) → F'
19. Rotate(C, (((-(s - 3)) * 180))°, f_1) → C'
20. Rotate(E, (((-(s - 3)) * 180))°, f_1) → E'_1
21. Polygon(F', C', E'_1) → driehoek3', e'_1, f', c'
22. Polygon(B, DD, E) → driehoek4, e_6, b_4, dd_2