正交中心演示 by Alfred Estberg

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. Line(A, B) → d
3. Line(B, C) → e
4. Line(C, A) → f
5. OrthogonalLine(A, e) → g
6. OrthogonalLine(B, f) → h
7. OrthogonalLine(C, d) → i
8. Intersect(e, g) → D
9. Intersect(d, i) → E
10. Intersect(f, h) → F
11. Segment(A, D) → j
12. Segment(C, E) → k
13. Segment(B, F) → l
14. Angle(C, D, A) → γ
15. Angle(C, F, B) → β
16. Segment(A, F) → m
17. Segment(A, E) → n
18. Angle(A, E, C) → α
19. Angle(B, F, A) → δ
20. Angle(A, D, B) → ε
21. Angle(C, E, B) → ζ
22. Segment(B, D) → p
23. Segment(B, E) → q
24. Segment(C, F) → r
25. Intersect(g, h) → G
26. Segment(B, C) → a_1
27. Segment(C, A) → b_1
28. Segment(A, B) → c_1
29. Angle(B, D, A) → η
30. Angle(A, D, C) → θ
31. Angle(A, F, B) → κ
32. Angle(B, F, C) → λ
33. Angle(B, E, C) → μ
34. Angle(C, E, A) → ξ