hm4.py

print("*********************\nIf you want to classify a triangle enter 1\nIf you want to classify a quadrilateral enter 2\n********************* ")
choice = int(input("Enter your choice: "))

if choice == 2:
    rec1 = int(input("Enter your first side of the rectangle: "))
    rec2 = int(input("Enter your second side of the rectangle: "))
    rec3 = int(input("Enter your third side of the rectangle: "))
    rec4 = int(input("Enter your fourth side of the rectangle: "))
    if rec1 == rec2 == rec3 == rec4:
        print("It is a square")
    elif rec1 == rec3 and rec2 == rec4:
        print("It is a rectangle")
    elif rec1 == rec2 and rec3 == rec4:
        print("It is a rectangle")
    elif rec1 == rec4 and rec2 == rec3:
        print("It is a rectangle")

elif choice == 1:
    tri1 = int(input("Enter your first side of the triangle: "))
    tri2 = int(input("Enter your second side of the triangle: "))
    tri3 = int(input("Enter your third side of the triangle: "))


    if  abs(tri1+tri2)>tri3 and abs(tri1+tri3) > tri2 and abs(tri2+tri3) > tri1:
        if tri1 == tri2 == tri3:
            print("It is a equilateral triangle")

        elif ((tri1 == tri2) and tri1 !=tri3 ) or ((tri2 == tri3) and tri2 !=tri1) or ((tri3 == tri1) and tri3 !=tri2):
            print("It is a isosceles triangle")

        else :
            print("It is scalene triangle")

    else:
        print("It is a isosceles triangle")

else:
    print("Invalid choice")