Pinwheel Tiling

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The Federation Square buildings in Melbourne, Australia feature an aperiodic pinwheel tiling attributed to Charles Radin. This tiling starts with a 1-2 right triangle, then divides it into 5 identical triangles, thus illustrating an order-5 rep-tile (a tile that can replicate itself).

Contributed by: Ed Pegg Jr (March 2011)
Open content licensed under CC BY-NC-SA



E. Pegg Jr. "Melbourne, City of Math." MAA Online. (Sep 5, 2006)

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