answer using Java
Exercise7 (The abstract classes) Assume you have the GeometricObject abstract class with its abstract methods, create a new circle class CircleNew and a new triangle class TriangleNew. The CircleNew data is radius while TriangleNew data are three sides; side1, side2 and side3. No- arg constructor and argument constructor for both classes should be there. Also getArea and getPerimeter must be written for both classes. Write a test program that can use the GeometricObject abstract class and creates
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