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- Newsgroups: sci.math
- Path: sparky!uunet!munnari.oz.au!uniwa!watson
- From: watson@maths.uwa.oz.au (David Watson)
- Subject: Re: Question about polyhedra
- Message-ID: <1992Sep2.005842.24150@uniwa.uwa.edu.au>
- Sender: news@uniwa.uwa.edu.au (USENET News System)
- Nntp-Posting-Host: madvax.maths.uwa.oz.au
- Organization: University of Western Australia
- References: <17rbgqINNscd@agate.berkeley.edu>
- Date: Wed, 2 Sep 1992 00:58:42 GMT
- Lines: 19
-
- faustus@ygdrasil.CS.Berkeley.EDU (Wayne A. Christopher) writes:
-
- >I need some information that must be in a book somewhere, but I can't
- >seem to find it. The question is this: for the various platonic
- >solids, in particular the dodecahedron and the icosahedron, if the
- >length of an edge is 1 and the polyhedron is centered about the origin,
- >what are the coordinates of the vertices? (For some convenient orientation.)
- >Any references or numbers would be very much appreciated. Thanks,
-
- Each vertex of the icosahedron has coordinates which are signed
- permutations of (0, 0.5, (root(5)+1)/4)
-
- The golden rectangle, with sides of 1 and (root(5)+1)/2, lies inside
- this icosahedron on each pair of axes.
- --
- Dave Watson Internet: watson@maths.uwa.edu.au
- Department of Mathematics
- The University of Western Australia Tel: (61 9) 380 3359
- Nedlands, WA 6009 Australia. FAX: (61 9) 380 1028
-