"Certain shapes- in particular squares, triangles and hexagons fit together to cover all the area of a sheet of paper without leaving any spaces. These are known as 'tesselations'. Each individual shape is known as a 'tile'." (Source: Polysymetrics)

:: Tesselation mathforum.org

:: Tiling mathforum.org

:: Tarquin Books www.tarquin-books.demon.co.uk

"Any relationship between a building and its users is one of violence, for any use means the intrusion of one order into another. This intrusion is inherent in the idea of architecture; any reduction of architecture to its spaces at the expense of its events is as simplicistic as the reduction of architecture to its facades [...] " from "Violence of Architecture" pp 121

Bernard Tschumi, February 1996,ISBN 0-262-70060-3 280 pp., 59 illus., $24.00/£15.95 (PAPER)

MIT Press