Mr. Art wrote in message <37CD54FE.76230D45@gci.net>...
>Isn't the equation for a 2D oval/ellips something like
>(x^2)/a + (y^2)/b = 0? A circle is x^2+y^2=0.
>Couldn't we find the part of the torus discription
>that deals with the major radius and add the division
>parts?


An oval is not an ellipse, they just look similar.  An oval is easier to
draw freehand, but an ellipse is easier to create mathematically.

Mark

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