Monreale Cathedral, Palermo, Italy

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains one regular four-pointed star polygon with vertex angle of 60° - composed of kites.
• Contains one regular four-pointed star polygon with vertex angle of 120° - composed of kites.
• There are two non-regular reflective tiles (including 2 kites).
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 139 polygons.

1. Photo by David Wade: SIC 043 (Monreale Cathedral, Palermo, Italy) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}

• Wade photo SIC 043

v54