三个单位长度的复数

GeoGebra 命令及参数

1. Circle(O, 1) → c
2. Point(c) → C
3. Point(c) → B
4. Line(D, O) → g
5. Rotate(C, Angle[G, O, B], O) → C'
6. Vector(O, C') → u
7. Vector(O, B) → b
8. Vector(B, D) → d
9. Vector(O, C) → e
10. Vector(C, D) → f
11. Rotate(G, (2 * Angle[G, O, A]), O) → G'
12. Vector(O, G') → i
13. Line(G', u) → j
14. Line(C', i) → k
15. Intersect(j, k) → H
16. Vector(G', H) → l
17. Vector(C', H) → m
18. Angle(C', O, B) → α
19. Angle(C, O, G) → β
20. Line(C, O) → q
21. Line(B, O) → r
22. Intersect(c, q, 2) → E
23. Intersect(c, r, 2) → I
24. CircleSector(O, I, E) → s
25. Vector(O, E) → v
26. Vector(O, I) → w