interface Drawable class java.awt.Point class java.awt.Polygon class DrawablePoint extends java.awt.Point implements Drawable class DrawablePolygon extends java.awt.Polygon implements Drawable class Triangle extends DrawablePolygon class Quadrilateral extends DrawablePolygon class Hexagon extends DrawablePolygon class Octagon extends DrawablePolygon class Rectangle extends Quadrilateral class Parallelogram extends Quadrilateral class Square extends Rectangle class Rhombus extends Parallelogram class DrawablePolygonTest1 extends Applet class DrawablePolygonTest2 extends Applet class DrawablePolygonTest3 extends Applet class TriangleTest extends Applet Not yet implemented! class HexagonTest extends Applet Not yet implemented! class RectangleTest extends Applet class SquareTest extends Applet class ParallelogramTest extends Applet class RhombusTest extends Applet