从角平分线构建三角形

GeoGebra 命令及参数

1. Ray(B, A) → a
2. Ray(G, A) → b
3. Ray(R, A) → c
4. Circle(B, 1) → d
5. Circle(R, 1) → e
6. Circle(G, 1) → f
7. Point(e) → E
8. Point(d) → F
9. Point(f) → G_1
10. Ray(R, E) → g
11. Mirror(E, c) → E'
12. Ray(R, E') → h
13. Ray(G, G_1) → i
14. Mirror(G_1, b) → G'
15. Ray(G, G') → j
16. Ray(B, F) → k
17. Mirror(B, a) → B'
18. Mirror(F, a) → F'
19. Ray(B', F') → k'
20. Circle(B, Bbis) → p
21. Intersect(p, a) → H,
22. Segment(B, H) → l
23. Circle(R, Cbis) → q
24. Intersect(q, c) → I,
25. Segment(R, I) → m
26. Circle(G, Dbis) → r
27. Intersect(r, b) → J,
28. Segment(G, J) → n
29. Polygon(B, J, R, H, G, I) → poly1, b_1, j_1, c_1, h_1, d_1, i_1