Using the NumPy Reshape and NumPy Flatten in Python

Q-1- Write a program to create a class named shape. In this class we have three sub classescircle, triangle and square each class has two-member function named draw() and erase ().Create these using polymorphism concepts.Q-2- Write a program to give an example for multiple inheritance in Java.Q-3- Write a program to give a simple example for abstract class.