=== aperiodic tiling ===

  * [[wp>Aperiodic_tiling]]
  * http://www.uwgb.edu/dutchs/symmetry/aperiod.htm
  * Penrose Tiles
     * "Penrose's second set is usually known as the kite and dart." http://www2.spsu.edu/math/tile/aperiodic/penrose/penrose2.htm
     * "Penrose's third aperiodic set is known as the Penrose rhombs." http://www2.spsu.edu/math/tile/aperiodic/penrose/penrose4.htm 
  * Wang's tiles (cf. Wang's Carpet)
  * [[category geometry]]