package picture;

/**
 * Class of square shapes.
 * 
 * @author Rance Cleaveland
 * @version 11/20/2006
 */
public class Square extends Rectangle {
	public double sideLength () {
		Point ul = getUpperLeft ();
		Point lr = getLowerRight ();
		return (ul.getX() - lr.getX());
	}
}