From: James Buddenhagen <jbuddenh@texas.net>
Subject: Re: Bounding sphere of an icosahedron
Date: Sat, 29 Jul 2000 11:45:06 -0500
Newsgroups: sci.math
Summary: [missing]

endpoints of one edge:  (0,t,1), (t,1,0)  where t=(1+sqrt(5))/2
center: (0,0,0).
Since t^2=t+1, edge=2 and edge/dia = 1/sqrt(t+2), or approx .52573111
--Jim Buddenhagen

David Gaskill wrote:
> 
> Please could somebody tell me, or give me a reference for, the ratio
> between the length of the side of one of the component equilateral
> triangles and the diameter of the sphere which passes through the
> vertices of a regular icosahedron?
> 
> Thanks,
> 
> David