点到线段最短距离（角平分线）

GeoGebra 命令及参数

1. Segment(A, B) → f
2. Segment(B, C) → g
3. AngularBisector(f, g) → h, i
4. Point(i) → R
5. Point(f) → P
6. Segment(R, P) → j
7. Angle(B, P, R) → α
8. OrthogonalLine(R, f) → k
9. Intersect(k, f) → F
10. Distance(R, P) → distanceDE
11. Point(g) → Q
12. Ray(B, R) → l
13. Segment(Q, R) → m
14. Mirror(P, l) → P'
15. Angle(R, Q, B) → β
16. Circle(B, 4) → c
17. Point(c) → D
18. Point(c) → E
19. CircleArc(B, D, E) → d
20. Point(c) → G
21. Point(c) → H
22. CircleArc(B, G, H) → e
23. Intersect(e, f) → I,
24. Intersect(d, g) → J,
25. Circle(I, 6) → p
26. Circle(J, 6) → q
27. Point(q) → K
28. Point(q) → L
29. CircleArc(J, K, L) → r
30. Point(p) → M
31. Point(p) → N
32. CircleArc(I, M, N) → s
33. Intersect(r, s) → O, , ,