Geometry

Figure 1: Kórnik Castle – frontal elevation. This photo, as well as all the other photos, is taken by the author (Source: Malgorzata de Latour-Abdalla).

Figure 1. Archway from the Darb-i Imam shrine in Isfahan, Iran, which was built in 1453 C.E. The larger pentagons outlined in pale blue were constructed using a large-scale girih tile pattern, and the small white pentagons were constructed using a small-scale girih tile pattern (Image courtesy of K. Dudley and M. Elliff).