title: Whether multiple points make up for a circle?
body: <p>If I have e.g. 20 points, how can i check to see if those points make up for a circle? It doesnt have to be a perfect circle.</p>
  
  <p>For example if I store the coordinates of my mouse every 200ms (as the user moves the mouse), I want to see if the user makes a circle gesture. And I cant expect the user to make a perfect circle.</p>