title: 2D Shape recognition algorithm - looking for guidance
body: <p>I need the ability to verify that a user has drawn a shape correctly, starting with simple shapes like circle, triangle and more advanced shapes like the letter A.</p>
  
  <p>I need to be able to calculate correctness in real time, for example if the user is supposed to draw a circle but is drawing a rectangle, my hope is to be able to detect that while the drawing takes place.</p>
  
  <p>There are a few different approaches to shape recognition, unfortunately I don't have the experience or time to try them all and see what works.</p>
  
  <p>Which approach would you recommend for this specific task?</p>
  
  <p>Your help is appreciated. </p>