通过外心的直线的等角共轭点轨迹

GeoGebra 命令及参数

1. Line(A, B) → a
2. Line(B, C) → b
3. Line(C, A) → c
4. Circle(A, B, C) → d
5. Point(d) → D
6. Center(d) → O
7. Mirror(D, O) → D'
8. OrthogonalLine(D, c) → e
9. OrthogonalLine(D, b) → f
10. Intersect(c, e) → E
11. Intersect(b, f) → F
12. Line(E, F) → g
13. OrthogonalLine(D', a) → h
14. OrthogonalLine(D', b) → i
15. Intersect(a, h) → G
16. Intersect(b, i) → H_1
17. Line(G, H_1) → j
18. Line(D', O) → k
19. Point(k) → I
20. Mirror(I, b) → I'
21. Mirror(I, c) → I'_1
22. Mirror(I, a) → I'_2
23. Circle(I'_2, I', I'_1) → p
24. Center(p) → J
25. Locus(J, I) → loc1
26. OrthogonalLine(A, b) → l
27. OrthogonalLine(B, c) → m
28. Intersect(l, m) → H
29. Polygon(A, B, C) → poly1, c_1, a_1, b_1