public Segment RotateAroundPoint(Point center, double angle)
{
return(new Segment(A.RotateAroundPoint(center, angle),
B.RotateAroundPoint(center, angle)));
}
public Line RotateAroundPoint(Point center, double angle)
{
return(new Line(A.RotateAroundPoint(center, angle),
B.RotateAroundPoint(center, angle)));
}