# solution_nested_squares.py
from turtle import *
pensize(4)
line_length = 100
for i in range(4):
forward(line_length)
left(90)
line_length = 150
for i in range(4):
forward(line_length)
left(90)
line_length = 200
for i in range(4):
forward(line_length)
left(90)
line_length = 250
for i in range(4):
forward(line_length)
left(90)
line_length = 300
for i in range(4):
forward(line_length)
left(90)
# Or you can run:
#for line_length in range(100, 350, 50):
# for i in range(4):
# forward(line_length)
# left(90)
done()