探索旋转变换 by Terry Lee Lindenmuth

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. Rotate(A, (-α), RotPt) → A'
3. Rotate(B, (-α), RotPt) → B'
4. Rotate(C, (-α), RotPt) → C'
5. Polygon(A', B', C') → Rotation, c', a', b'
6. Segment(A, A') → f
7. Segment(B, B') → g
8. Segment(C, C') → h
9. LineBisector(g) → i
10. LineBisector(f) → j
11. LineBisector(h) → k
12. Midpoint(h) → D
13. Midpoint(f) → E
14. Midpoint(g) → F
15. Angle(C, RotPt, C') → γ
16. Angle(C', RotPt, C) → δ
17. Segment(C, RotPt) → m
18. Segment(C', RotPt) → n