public class Circle {
	private final Point2D center;
	private final double radius;
	
	//constructors
	Circle(){
		this.center = new Point2D();
		this.radius = 1;
	}
	
	Circle(Point2D center, double radius){
		this.center = center;
		this.radius = radius;
	}
	
	//methods
	Circle translate (double dx, double dy) {
		return new Circle( this.center.translate(dx, dy) , this.radius);
	}
	
	Circle translate (Point2D vect) {
		return new Circle( this.center.translate(vect) , this.radius);
	}
	
	
}