Aperiodic_tiling and http://www.uwgb.edu/dutchs/symmetry/aperiod.htm

• Terracing with Spectres (in the anarchive)
• Combinatorial coordinates for the aperiodic Spectre tiling

• “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

category geometry