筝形的角

GeoGebra 命令及参数

1. Polygon(A, C, D, B) → vierhoek1, a, c, d, b
2. Segment(B, E) → f
3. CircleArc(B, DD, D) → e
4. Polygon(A, C, E, B) → vierhoek2, a_1, c_1, e_1, b_1
5. Polygon(B, E, D) → driehoek1, d_1, b_2, e_2
6. Rotate(B, (((s - 1) * 180))°, d_1) → B'
7. Rotate(E, (((s - 1) * 180))°, d_1) → E'
8. Rotate(D, (((s - 1) * 180))°, d_1) → D'
9. Polygon(B', E', D') → driehoek1', d', b', e'
10. Polygon(DD, E, B) → driehoek2, b_3, dd, e_3
11. LineBisector(DD, C) → g
12. Intersect(g, a_1) → F
13. Intersect(g, e_1) → G
14. Segment(F, G) → h
15. CircleArc(D, DD, C) → k
16. Polygon(B, A, F, G) → vierhoek3, b_4, a_2, f_1, g_1
17. Polygon(F, C, E, G) → vierhoek4, f_2, c_2, e_4, g_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. Rotate(G, (((-(s - 3)) * 180))°, f_1) → G'
22. Polygon(F', C', E'_1, G') → vierhoek4', f', c', e'_1, g'
23. Mirror(E, f_1) → EE
24. Polygon(DD, F, G, EE) → vierhoek5, dd_1, f_3, g_3, ee
25. Intersect(b_3, h) → H
26. Polygon(DD, H, G, B) → vierhoek6, dd_2, h_1, g_4, b_5
27. Segment(DD, H) → i
28. OrthogonalLine(DD, f_1) → j
29. Intersect(j, f_1) → I
30. Segment(DD, I) → l
31. Polygon(B, DD, I, G) → vierhoek7, b_6, dd_3, i_1, g_5
32. Intersect(b_6, dd_3) → J
33. Polygon(J, A, F, I) → vierhoek8, j_1, a_3, f_4, i_2
34. Rotate(J, (((s - 5) * 180))°, i_2) → J'
35. Rotate(A, (((s - 5) * 180))°, i_2) → A'
36. Rotate(F, (((s - 5) * 180))°, i_2) → F'_1
37. Rotate(I, (((s - 5) * 180))°, i_2) → I'
38. Polygon(J', A', F'_1, I') → vierhoek8', j', a', f'_1, i'
39. Polygon(J, I, H) → driehoek3, h_2, j_2, i_3
40. Polygon(DD, I, G, EE) → vierhoek9, dd_4, i_4, g_6, ee_1
41. CircleArc(DD, A, EE) → p
42. Angle(A, B, E) → α
43. Angle(B, E, DD) → β
44. Angle(E, DD, B) → γ
45. Angle(G, I, DD) → δ
46. Angle(I, DD, B) → ε
47. Angle(B, G, I) → ζ