I always go to the Internet for ovals here is a site that does it for ya

http://www.anvilfire.com/21centbs/math/ovals.htm


"AL" wrote in message
news:Z90Mb.17834$sv6.54444@attbi_s52...
I couldn't believe my ears when I heard Norm say this on today's butterfly
table episode. He was drarwing an ellipse with a clamp n tool and a piece
of plywood at 90 degrees.