三角形五心作图演示

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c_1, a, b
2. AngularBisector(B, A, C) → d
3. AngularBisector(B, C, A) → e
4. AngularBisector(C, B, A) → f
5. LineBisector(A, C) → g
6. LineBisector(C, B) → h
7. LineBisector(A, B) → i
8. Midpoint(b) → D
9. Midpoint(c_1) → E
10. Midpoint(a) → F
11. Line(A, F) → j
12. Line(B, D) → k
13. Line(C, E) → l
14. OrthogonalLine(B, b) → m
15. OrthogonalLine(C, c_1) → n
16. OrthogonalLine(A, a) → p
17. Intersect(g, h) → G
18. Intersect(j, k) → H
19. Intersect(m, n) → I
20. Intersect(d, e) → J
21. Segment(G, H) → t
22. Segment(H, I) → a_1
23. Distance(G, H) → v
24. Distance(H, I) → w
25. Distance(G, H) → distanceGH
26. Distance(H, I) → distanceHI
27. Distance(A, B) → distanceAB
28. Distance(A, C) → distanceAC
29. Distance(B, C) → distanceBC
30. Angle(C, A, B) → α
31. Angle(A, B, C) → β
32. Angle(B, C, A) → γ
33. Distance(A, B) → c
34. Distance(A, C) → b_1
35. Distance(B, C) → d_1