旋转多边形 by GeoGebra Team

GeoGebra 命令及参数

1. Polygon(A, B, C) → poly1, c, a, b
2. Intersect(xAxis, yAxis) → O
3. Rotate(A, α, O) → A'
4. Rotate(B, α, O) → B'
5. Rotate(C, α, O) → C'
6. Polygon(A', B', C') → poly1', c', a', b'
7. Segment(A, O) → d
8. Segment(O, A') → e
9. Angle(A, O, A') → β