探索旋转 by leeb

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. Intersect(xAxis, yAxis) → D
3. Circle(D, E) → d
4. Segment(D, E) → e
5. Rotate(E, 72*°, D) → I
6. Rotate(I, 72*°, D) → H
7. Rotate(H, 72*°, D) → G
8. Rotate(G, 72*°, D) → F
9. Polygon(E, H, F, I, G) → poly2, e_1, e'', f, e', e'''
10. Rotate(E, β, D) → E'
11. Rotate(H, β, D) → H'
12. Rotate(F, β, D) → F'
13. Rotate(I, β, D) → I'
14. Rotate(G, β, D) → G'
15. Polygon(E', H', F', I', G') → poly2', e'_1, h', f', i', g'
16. Rotate(A, α, D) → A'
17. Rotate(B, α, D) → B'
18. Rotate(C, α, D) → C'
19. Polygon(A', B', C') → poly1', c', a', b'
20. Circle(D, J) → k
21. Point(yAxis) → K
22. Circle(K, J) → p
23. Point(yAxis) → L
24. Circle(L, D) → q
25. Point(yAxis) → M
26. Circle(K, M) → r
27. Point(yAxis) → N
28. Circle(L, N) → s
29. Point(p) → O
30. Point(q) → P
31. CircumcircleArc(J, O, D) → t
32. Intersect(k, q, 1) → Q
33. CircumcircleArc(D, P, Q) → c_1
34. Rotate(k, θ, D) → k'
35. Rotate(r, θ, D) → r'
36. Rotate(s, θ, D) → s'
37. Rotate(J, θ, D) → J'
38. Rotate(O, θ, D) → O'
39. Rotate(D, θ, D) → D'
40. CircumcircleArc(J', O', D') → t'
41. Rotate(D, θ, D) → D'_1
42. Rotate(P, θ, D) → P'
43. Rotate(Q, θ, D) → Q'
44. CircumcircleArc(D'_1, P', Q') → d_1