Must be written in C# and the class variables have to be private. I am confused about how to use the interfaces. I also am confused about how to use a variable from an abstract class after doing the whole " :base(parameter) " thing in the constructor of an inheriting class. So if you could write comments about these things, that would be greatly appreciated.

Write a class named Octagon that extends the abstract class GeometricObject and implements the interfaces IComparable and ICloneable. Assume that all eight sides of the octagon are of equal size. The area can be computed using the following formula:

area = (2+4/sqrt(2))*side*side

Write a test program that creates an Octagon object with the side value 8 and displays its area and perimeter (to 2 decimal places). Create a new object using the clone method and create a method that compares the two objects (Octagon object and clone object) and returns true if all data elements are the same in both objects, false if any data object is different.