Decagonal and Quasicrystalline Tilings in Medieval Islamic Architecture

Decagonal and Quasicrystalline Tilings in Medieval Islamic Architecture | peterlu.org

The conventional view holds that girih (geometric star-and-polygon) patterns in medieval Islamic architecture were conceived by their designers as a network of zigzagging lines, where the lines were drafted directly with a straightedge and a compass. We show that by 1200 C.E.