# -*- coding: utf-8 -*-
from turtle import *

def carre(c):
    down()
    for i in range (4) :
        forward(c)
        left(90)
    up()
    return

up()
clear()
hideturtle()
longueur=10
for i in range (5):
    goto(0,0)              
    carre(longueur)     
    longueur+=15
    

exitonclick()