#------------------------------------------------------------------------------
#  TurtleLoop5.py
#------------------------------------------------------------------------------

import turtle
wn = turtle.Screen()
bob = turtle.Turtle()
bob.color('red', 'yellow')
bob.begin_fill()
while True:
   bob.forward(200)
   bob.left(170)
   if abs(bob.pos()) < 1:  # see if bob is back at the origin (0, 0)
      break
bob.end_fill()

wn.mainloop()