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→Plane Tessellations: Spelling/Grammar Check, typos fixed: 1970's → 1970s
[[Image:Penrosetiling.gif|right|150px]]
[[Image:Penrosetiling.gif|right|150px]]
A tiling is periodic if, when translated in at least two non-parallel directions the tiling 'merges' with itself. A collection of tiles is aperiodic if the collection tiles the plane, but never in a periodic fashion. [[Roger Penrose]] discovered several such tilings in the 1970's.
A tiling is periodic if, when translated in at least two non-parallel directions the tiling 'merges' with itself. A collection of tiles is aperiodic if the collection tiles the plane, but never in a periodic fashion. [[Roger Penrose]] discovered several such tilings in the 1970s.
The one here demonstrates aspects of fivefold symmetry, and was inspired by some of the tilings of [[Kepler]].
The one here demonstrates aspects of fivefold symmetry, and was inspired by some of the tilings of [[Kepler]].