三角函数与多边形构造

GeoGebra 命令及参数

1. Rotate(A_1, α, B) → A'
2. Angle(A_1, B, A') → β
3. Polygon(B, C_1, A') → poly1, a', b_1, c
4. Dilate(B, TriangleSize, B) → B'
5. Dilate(C_1, TriangleSize, B) → C
6. Dilate(A', TriangleSize, B) → A
7. Polygon(B', C, A) → poly1', a'', b', c'
8. Distance(A, C) → distanceAC
9. Distance(B, C) → distanceBC
10. Midpoint(b') → D
11. Midpoint(a'') → E
12. Midpoint(c') → F
13. Distance(A, B) → distanceAB
14. Angle(A, C, B') → γ
15. Angle(B, A, C) → δ
16. Angle(A, C, B') → ε
17. Circle(B, 1) → e
18. Circle(A, 1) → f
19. AngularBisector(A, B, C) → g
20. AngularBisector(B, A, C) → h
21. Intersect(e, g, 2) → G
22. Intersect(f, h, 2) → H
23. Angle(A_1, B, A') → ζ
24. Angle(B, A, C) → η