圆中的反射现象：几何作图与数学概念

GeoGebra 命令及参数

1. Intersect(xAxis, yAxis) → A
2. Point(yAxis) → C
3. Polygon(A, B, C, D) → q1, a, b, c, d
4. Sequence(Polygon[Translate[A, Vector[(u * Vector[B, D])]], Translate[B, Vector[(u * Vector[B, D])]], Translate[C, Vector[(u * Vector[B, D])]], Translate[D, Vector[(u * Vector[B, D])]]], u, -5, 5) → l1
5. Point(yAxis) → F
6. CircumcircleArc(E, F, G) → e
7. Mirror(l1, e) → l1'
8. Mirror(l1, e) → l1'_{1}