CMPT-117 Assignment 3b: Shape Hierarchy

Note: there are many ways of doing this. This is one acceptable answer.

Shape
	TwoDimensionalShape
		Ellipse
			Circle
		PieSlice
		Crescent
		Polygon
			Triangle
			Quadrilateral
				Parallelogram
					Rhombus
					Rectangle
			RegularPolygon
				EquilateralTriangle
				Square	
				RegularPentagon
				...
		TwoDimensionalBlob
		...
	ThreeDimensionalShape
		Polyhedron
			Parallelepiped
				RectangularBox
			PlatonicSolid
				Tetrahedron
				Cube
				Octahedron
				Decahedron
				Dodecahedron
				Icosahedron
		Ellipsoid
			Sphere
		ConicSection
		ThreeDimensionalBlob
		...