三角形内心与垂心

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. AngularBisector(B, A, C) → d
3. AngularBisector(A, C, B) → e
4. AngularBisector(C, B, A) → f
5. Circle(A, B, C) → g
6. Intersect(g, f) → D_1, E
7. Intersect(g, d) → F_1, F
8. Intersect(g, e) → H, D
9. Polygon(D, E, F) → poly2, g_1, i, e_1
10. Center(g) → J
11. Polygon(G, I, K) → poly3, k, g_2, i_1
12. Circle(G, I, K) → h
13. Center(h) → L
14. Segment(L, I) → j
15. Segment(L, K) → l
16. Point(h) → M
17. Segment(M, K) → m
18. Segment(M, I) → n