cooltopics

=Maddie's Topic - Polyhedra=

__Feb. 17th, 2009__
Hey guys, so here's the stuff about polyhedra!!! A polyhedron is basically a 3D polygon, it's essentially just a shape. A polyhedron (pl. polyhedra) is a 3D shape composed of: 2D or planar faces, 1D or linear edges, 0D vertices represented by points and -1D which can be found by using abstract math theories. Our application: polyhedron in chemistry: imagine the vertices as the atoms and the bonds to be the inside edges of the shape. I.e. a pyramid, the inside resembles a tetrahedral atom. Here's the pictures too! Polyhedra in atoms:  __[|http://ipc.iisc.ernet.in/~jemmis/CnEN_files/7923scit2.ce.gif__________]__ __Polyhedra in architecture: The ROM crystal ____http://wvs.topleftpixel.com/photos/2007/06/ROM_Crystal_opening_wide_crowd_02.jpg____ Amethyst Cave: Polyhedra in nature __http://robinhanson.typepad.com/photos/uncategorized/2008/11/13/crystalcave615.jpg__ Here's some external links that let you play with some 3D polyhedra!!! __Waterman Polyhedra __: [] __Cabri that we used during class____:__ []