/** 
   An interface for methods that return
   the perimeter and area of an object.

   @author Frank M. Carrano, Timothy M. Henry
   @version 5.0
*/
public interface Measurable
{
   /** Gets the perimeter.
       @return  The perimeter. */
   public double getPerimeter();
   
   /** Gets the area.
       @return  The area. */
   public double getArea();
} // end Measurable