MDP@SU-SCORE.ARPA (07/11/84)
From: Mike Peeler <MDP@SU-SCORE.ARPA> To BARNARD@SRI-AI: The problem is that three points do not ONLY define a circle. It takes five points to determine a unique conic section. Besides, it's fairly likely that the curve is desired to be a function of x. Cheers, Mike