三角形内切圆的构造与性质

GeoGebra 命令及参数

1. Polygon(A, B, 3) → poly1, f, g, h, C
2. LineBisector(C, B) → i
3. LineBisector(A, B) → j
4. Intersect(i, j) → D
5. Intersect(i, g) → E
6. Intersect(j, f) → F
7. LineBisector(C, A) → k
8. Intersect(k, h) → G
9. Circle(D, E) → c
10. Point(c) → H
11. Segment(H, C) → l
12. Segment(H, B) → m
13. Segment(H, A) → n
14. Point(c) → K
15. Segment(D, K) → t
16. Intersect(c, t, 1) → L