Date: Sun, 07 Mar 2004 07:44:22 GMT From: Malcolm William Mason <mwm1(delete)nospamedu> Subject: Re: Octagonal rear tyres - how/why?
On Wed, 3 Mar 2004 13:49:44 -0000, "Pete Bennett" <pete_bennettnospampipex.com> wrote: >I know I wrote octagonal, then increased the number of flat spots to 10 or >12... what is a twelve sided shape? A dodecahedron or something, and a ten >sided a decahedron? > The greek suffiics "hedron" denotes a solid object, 'gon" denotes a plane object or figure. Thus a polygon is a multisided plane figure and a polyhedron is a multisided (surfaced) solid. A duodecahedron is a solid with 12 surfaces (not dodeca...) some of these are distributed or were distributed with a month printed on each surface for use as desk calendars. Similarly A duodecagon is a polygon with four more sides than an octagon.