Today's prompt was 'tire jack'.

Back to atan2, I want to use atan2 to build the initial triangle, get the 3rd point and find the leftmost and rightmost, greatest and least angle. Honestly, I'm better of building around an initial point and then a random angle, then pick one of the other points to start throwing out a triangle and then a triangle fan until we get back around... I hope that makes any sense.