正交中心与三角形性质演示 by hannah.wundrak

GeoGebra 命令及参数

1. Rotate(A, 45*°, B) → A'
2. Angle(A, B, A') → α
3. Segment(A, B) → a
4. Segment(B, A') → b
5. Segment(A', A) → c
6. Angle(A', A, B) → γ
7. Angle(B, A', A) → β
8. AngularBisector(c, a) → d, e
9. AngularBisector(a, b) → f, g
10. AngularBisector(b, c) → h, i
11. Intersect(e, g) → C
12. Intersect(i, e) → D
13. Intersect(e, g) → E
14. Distance(A', C) → distanceA'C
15. Distance(A, C) → distanceAC
16. Distance(B, C) → distanceBC
17. Rotate(F, 90*°, G) → F'
18. Angle(F, G, F') → δ
19. Segment(F, G) → j
20. Segment(G, F') → k
21. Segment(F', F) → l
22. Angle(F', F, G) → η
23. Angle(G, F', F) → ε
24. AngularBisector(l, j) → m, n
25. AngularBisector(j, k) → p, q
26. AngularBisector(k, l) → r, s
27. Intersect(q, n) → H
28. Distance(G, H) → distanceGH
29. Distance(F', H) → distanceF'H
30. Distance(F, H) → distanceFH
31. Rotate(I, 95*°, J) → I'
32. Angle(I, J, I') → ζ
33. Segment(I, J) → t
34. Segment(J, I') → a_1
35. Segment(I', I) → b_1
36. Angle(J, I', I) → θ
37. Angle(I', I, J) → κ
38. AngularBisector(b_1, a_1) → c_1, d_1
39. AngularBisector(t, b_1) → e_1, f_1
40. AngularBisector(a_1, t) → g_1, h_1
41. Intersect(d_1, f_1) → K
42. Distance(I, K) → distanceIK
43. Midpoint(I, K) →
44. Distance(J, K) → distanceJK
45. Midpoint(J, K) →
46. Distance(J, I') → distanceJI'
47. Midpoint(J, I') →