中点垂线 by Serlo Education

GeoGebra 命令及参数

1. Line(B, A) → a
2. LineBisector(B, A) → b
3. OrthogonalLine(B, a) → c
4. Intersect(a, b) → C
5. Midpoint(C, A) → C'
6. Circle(B, C') → d
7. Intersect(d, b, 2) → D
8. Circle(A, D) → e
9. Intersect(d, e, 2) → E
10. OrthogonalLine(B, a) → f
11. OrthogonalLine(A, a) → g
12. Intersect(e, g, 2) → F
13. Intersect(d, f, 1) → G
14. Rotate(F, Min[Max[(t * 180), 0], 180]°, A) → F'
15. Rotate(G, Min[Max[((t - 1) * 180), 0], 180]°, B) → G'
16. CircleArc(A, F, F') → h
17. CircleArc(B, G, G') → k
18. Ellipse(E, D, F) → p
19. Intersect(p, b, 2) → H
20. Intersect(p, b, 1) → I
21. Translate(I, ((H - I) * Min[Max[t - 2, 0], 1])) → I'
22. Segment(I, I') → i
23. Vector(J, K) → u