Penrose P3 Tiles
Description
Penrose tilings cover a surface in a pattern with some remarkable properties: they are aperiodic, have 5-fold symmetry, and are self-similar. There are several variations of Penrose tilings--this Thing contains the two tiles needed for the rhombus (P3) tiling. The edge of each tile has either a notch or a protrusion, which is either round or triangular. These notches and protrusions keep you from creating a repeating pattern when tiling. Round notches need to be lined up with round protrusions, and triangular notches with triangular protrusions. It is fairly easy to wind up with a "defect" where there's a spot no tile can fit. For more information, see the Wikipedia article, http://en.wikipedia.org/wiki/Penrose_tiling (also the source for the pattern I used), and these two more technical discussions: http://www.ams.org/samplings/feature-column/fcarc-penrose and http://www.ams.org/samplings/feature-column/fcarc-ribbons Note that a proper Penrose tiling will require about 16 large tiles for every 10 small tiles, so if you just print a bunch of this file you will have an excess of small tiles.
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