title: How to Tessellate this shape?
body: <p>I am trying to tessellate the following shape, as shown in the image below. (I do not have enough reputation to post images, so here it is. 
  I am using python turtle graphics to try and have each shape fit into each other, but I don't know how or when to make it start over again.</p>
  
  <p>I have already made the shape, as seen below. </p>
  
  <pre><code>import turtle
  
  t = turtle.Turtle()
  t.left(30)
  t.speed("fastest")
  turtle.delay(0)
  counter = 0 
  t.begin_fill()
  def setup(length):
      t.forward(length)
      t.right(120)
      t.forward(length / 3)
      t.left(60)
      t.forward(length / 3)
      t.left(120)
      t.forward(length)
      t.left(60)
      t.forward(length)
      t.left(120)
      t.forward(length / 3)
      t.left(60)
      t.forward(length / 3)
      t.right(120)
      t.forward(length)
      t.right(60)
  
  while True:
      setup(100)
  </code></pre>
  
  <p>I don't know where to go from here, and the code right now just makes the base shape.</p>