索迪圆

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. AngularBisector(B, A, C) → d
3. AngularBisector(C, B, A) → e
4. Intersect(d, e) → D
5. OrthogonalLine(D, c) → f
6. Intersect(f, c) → E
7. Circle(D, E) → g
8. OrthogonalLine(D, a) → h
9. Intersect(h, a) → F
10. OrthogonalLine(D, b) → i
11. Circle(B, F) → k
12. Circle(A, E) → p
13. Circle(C, F) → q
14. OrthogonalLine(A, a) → j
15. OrthogonalLine(B, b) → l
16. OrthogonalLine(C, c) → m
17. Intersect(q, m) → G, H
18. Intersect(k, l) → I, J
19. Intersect(p, j) → K, L
20. Line(F, K) → n
21. Line(F, L) → r
22. Intersect(p, r, 2) → M
23. Intersect(p, n, 2) → N
24. Intersect(q, b) → O,
25. Line(O, I) → s
26. Intersect(k, s, 2) → P
27. Line(O, J) → t
28. Intersect(k, t, 2) → Q
29. Line(E, G) → a_1
30. Intersect(q, a_1, 2) → R
31. Line(E, H) → b_1
32. Intersect(q, b_1, 2) → S
33. Circle(M, Q, S) → c_1
34. Circle(N, P, R) → d_1
35. Intersect(j, a) → T
36. Intersect(m, c) → U
37. Intersect(l, b) → V
38. Angle(B, T, A) → α
39. Angle(C, U, A) → β
40. Angle(B, V, A) → γ