i时钟：多边形与三角函数构建的交互式时钟

GeoGebra 命令及参数

1. Point(b) → A
2. Point(c) → B
3. Segment(C, A) → d
4. Segment(C, B) → f
5. Point(c) → D
6. Segment(B, D) → i
7. Point(Circle[A, 1.4142135623730951]) → F
8. Segment(A, F) → g
9. Segment(A, F) → h
10. Polygon(B, C, D) → poly1, d_1, b_1, c_1
11. Segment(C, D) → d_h
12. Point(c) → E
13. Point(c) → G
14. Segment(B, G) → τ
15. Segment(F, G) → n
16. Slope(n) → m
17. Slope(d_h) → m_1
18. Circle(C, A) → k
19. Area(k) → e
20. PointIn(k) → Pointk
21. Line(H, f) → j
22. Intersect(k, j, 2) → I
23. Segment(C, I) → l
24. Line(I, b) → p
25. Intersect(p, d) → J
26. Segment(C, J) → q
27. Segment(J, I) → s
28. Point(s) → K
29. Segment(C, K) → t
30. Segment(I, F) → a_1
31. Segment(J, A) → e_1
32. Polygon(C, I, F, G, B) → poly2, c_2, i_1, f_1, g_1, b_2
33. Name(o) → A1
34. Name(u) → B1
35. Name(a) → C1
36. Point(k) → L
37. Circle(M, N) → h_1
38. Point(h_1) → O
39. Point(h_1) → P
40. Midpoint(O, P) → Q
41. Segment(M, O) → j_1
42. Segment(z_1, z_2) → k_1