Aperiodic Tilings
The Wayback Machine - https://web.archive.org/web/20170803085704/http://www.uwgb.edu/dutchs/symmetry/aperiod.htm
Actions
Flag
1 Connection
The Wayback Machine - https://web.archive.org/web/20170803085704/http://www.uwgb.edu/dutchs/symmetry/aperiod.htm