Ron Parker wrote:

> On Thu, 03 Sep 1998 19:36:50 +0200, JK <kla### [at] hotmailcom> wrote:
> >s = 2*tan(72/2)*r
> >that is: r = s/(2*tan(72/2)
>
> This is the radius of the _inscribed_ circle.  It's not much help in
> finding the vertex points.

  Maybe I need some more math lessons, but does it matter if I use the
inscribed circle? I believe the effect of using this radius in the
equations above is the same, but the equations needed for finding the
side length are different than when using the outscribed circle.

JK

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