title: iPhone iOS which CGAffineTransform does isometric transform [ _ ] to /_/
body: <p>I need to make a rectangular view [ ] appear as if it's top is rotated back, while the bottom is pinned in place: / \  . The resulting image is isometric with the bottom being wider than the top. </p>
  
  <p><strong>Which CGAffineTransform do I need to accomplish this goal?</strong></p>