I need to write an inheritance hierarchy for classes quadrilateral, trapezoid, parallelogram, rectangle and square. Quadrilateral bieng the superclass of the heirarchy. Make the hierarchy as deep as possible. Specify the instance variables and methods for each class. The private instance variable of Quadrilateral should be the x-y coordinate pairs for the four ended points fo the Quadrilateral. I then need to write a program that instantiates objects of my classes and outputs each objects area. I am so lost.