from turtle import *
alue = Screen()
pen = Turtle()
pen.reset()
a = 60 
b = 30
c = 25
laskuri = 0
while laskuri < 360/a:
 pen.forward(b)
 pen.right(a)
 pen.forward(b+c)
 pen.right(a)
 pen.forward(c)
 pen.right(a)
 pen.forward(b)
 pen.left(a)
 pen.forward(b-c)
 pen.left(a)
 laskuri = laskuri + 1