Post-Lab - Lab (16)
1) Consider a graphics system that has classes for various figures,
say rectangles, squares, triangles, circles and so on. For example,
a rectangle might have data members height, width, and center point, while
a square and circle might have only a center point and an edge length or
radius respectively. In a well designed system these would be derived
from a common class, Figure. For this assignment, you are
required to implement such a system.