Posted by Erik on November 18, 2001 at 15:36:18:
In Reply to: Re: Re: Re: Re: can-o-worms posted by Kenneth Sloan on November 18, 2001 at 13:55:41:
I'm digging way back here, but isn't what you described actually a cycloid (a loopy line)? I think a cardiod looks similar to a heart. It would have the equation r=a-a*cos(theta).
However, I could very well be wrong...
Erik