Question

In Python, develop an inheritance hierarchy based upon a Polygon class that has abstract methods area( ) and perimeter( ). To avoid trivial math, implement classes RightTriangle, Square and Rectangle.

Answer 1

Implemented polygon base class with right triangle,square and rectangle as child classes which inherit from polygon class ,getarea and getperimeter are abstract methods

import math
class Polygon:
def getArea(self):
pass;
  
def getPerimeter(self):
pass;
  
  
class RightTriangle(Polygon):
def __init__(self,height,width):
self.__width=width;
self.__height=height;
  
def getArea(self):
return 0.5*self.__width*self.__height;
  
def getPerimeter(self):
return self.__width+self.__height+(math.sqrt((self.__width*self.__width)+(self.__height*self.__height)));
  
class Square(Polygon):
def __init__(self,side):
self.__side=side;
  
def getArea(self):
return self.__side*self.__side;
def getPerimeter(self):
return 4*self.__side;
  
class Rectangle(Polygon):
  
def __init__(self,length,breadth):
self.__length=length;
self.__breadth=breadth;
  
def getArea(self):
return self.__length*self.__breadth;
  
def getPerimeter(self):
return 2*(self.__length+self.__breadth);
  
print("RightTriangle");
rt=RightTriangle(3,4);
print("Area: "+str(rt.getArea()));
print("Perimeter: "+str(rt.getPerimeter()));
s=Square(5);
print("Square");
print("Area: "+str(s.getArea()));
print("Perimeter: "+str(s.getPerimeter()));
print("Rectangle");
r=Rectangle(5,4);
print("Area: "+str(r.getArea()));
print("Perimeter: "+str(r.getPerimeter()));

Expected output: