From: Mike Kent
Newsgroups: sci.math
Subject: Re: Soccer ball
Date: Thu, 09 Oct 1997 23:09:10 -0400
Dik T. Winter wrote:
>
> In article <343D5856.7967@iafrica.com> helix@iafrica.com writes:
> > Can someone e-mail me the mathematical name for a soccer ball
> >
> > e.g. dodecahedron, icosahedron etc.
>
> It has no mathematical name as far as I know. It consists of
> hexagons and pentagons.
> --
> dik t. winter, cwi, kruislaan 413, 1098 sj amsterdam, nederland, +31205924131
> home: bovenover 215, 1025 jn amsterdam, nederland; http://www.cwi.nl/~dik/
"Truncated icosahedron". This is one of the convex semiregular
polyhedra
(Archimedean solids), all of which have fairly standarized names. See
(if
you can find it) "Polyhedron Models", Wenniger, Cambridge: the
University
Press, 1971.
// m
==============================================================================
From: RM Mentock
Newsgroups: sci.math
Subject: Re: Soccer ball
Date: Fri, 10 Oct 1997 09:46:24 -0400
Dik T. Winter wrote:
>
> In article <343D5856.7967@iafrica.com> helix@iafrica.com writes:
> > Can someone e-mail me the mathematical name for a soccer ball
> >
> > e.g. dodecahedron, icosahedron etc.
>
> It has no mathematical name as far as I know. It consists of
> hexagons and pentagons.
Check out:
http://www.astro.virginia.edu/~eww6n/math/ArchimedeanSolid.html
There are many named non-regular polyhedra. The Archimedean solids
have all edges the same length, but not all faces are the same shape.
The name for the soccer ball is "truncated icosahedron," not very
imaginative.
--
D.
mentock@mindspring.com
http://mentock.home.mindspring.com/index.htm