圆的分割

GeoGebra 命令及参数

1. Circle(A, p) → c
2. Rotate(B, (360 / n)°, A) → B'
3. CircleSector(A, B, B') → d
4. Angle(B, A, B') → α
5. Sequence(Rotate[d, 360° - (i * 360 / n)°, A], i, 1, n, 1) → list1
6. Point(xAxis) → C
7. OrthogonalLine(C, xAxis) → a
8. Circle(C, p) → e
9. Rotate(B, 225*°, A) → B'_1
10. Rotate(B', 225*°, A) → B''
11. Rotate(D, (-α) / 2, C) → D'
12. Rotate(C, α, D') → C'
13. CircleSector(D', C, C') → f
14. Vector(C, C') → u
15. Midpoint(D', C') → E
16. Sequence(Translate[f, Vector[i / 2 * u]], i, 2, n, 2) → list2
17. Mirror(f, E) → f'
18. Sequence(Translate[f', Vector[i / 2 * u]], i, 2, n, 2) → list3
19. Point(list2) → F
20. Point(list3) → G
21. Segment(F, G) → b