import turtle

#turtle.color("Red")
#turtle.forward(100)
#turtle.left(144)
#turtle.color("Blue")
#turtle.forward(100)
#turtle.left(144)
#turtle.color("Green")
#turtle.forward(100)
#turtle.left(144)
#turtle.color("Purple")
#turtle.forward(100)
#turtle.left(144)
#turtle.color("Yellow")
#turtle.forward(100)


turtle.register_shape("square", ((10,0),(10,10),(0,10),(0,0),(5,-5),(10,0)))

turtle.shape("square")
turtle.mainloop()



