100 POINTS
Do the points (0,0) (a,0) (a,a) and (0,a) represents a special quadrilateral? If so, which one?
If not, explain why not and what should be changed? Be sure to sketch the quadrilateral.

If it does represent a special quadrilateral, use the formulas from this module to prove one
of the properties from section 6.01a. Show and explain your work including a sketch.