三角形中心点关系演示

GeoGebra 命令及参数

1. Polygon(A, B, C) → t1, c, a, b
2. Midpoint(C, B) → D
3. Midpoint(A, C) → E
4. Midpoint(A, B) → F
5. OrthogonalLine(E, b) → f
6. OrthogonalLine(F, c) → g
7. OrthogonalLine(D, a) → h
8. Segment(A, D) → i
9. Segment(C, F) → j
10. Segment(E, B) → k
11. Intersect(i, j) → Centroid
12. AngularBisector(A, C, B) → l
13. AngularBisector(C, A, B) → m
14. AngularBisector(A, B, C) → n
15. Intersect(l, m) → Incenter
16. Intersect(f, g) → Circumcenter
17. OrthogonalLine(A, a) → p
18. OrthogonalLine(B, b) → q
19. OrthogonalLine(C, c) → r
20. Intersect(p, q) → Orthocenter