角平分线动画构造

GeoGebra 命令及参数

1. Ray(A, C) → b_1
2. Ray(A, B) → a
3. Rotate(D, (a1 * t), A) → D'
4. CircleArc(A, D, D') → c
5. Circle(A, D) → d
6. Intersect(d, b_1) → E,
7. Rotate(E, (a2 * t), D) → E'
8. CircleArc(D, E, E') → e
9. Circle(D, E) → f
10. Rotate(D, (a3 * t), E) → D''
11. CircleArc(E, D, D'') → g
12. Intersect(g, f) → F, G, ,
13. Translate(A, Vector[(b * Vector[A, G])]) → A'
14. Segment(A, A') → h
15. Angle(C, A, G) → α
16. Angle(G, A, B) → β