Madrasa and khanqa of al-Zahr Barquq

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 2.5°.
• Contains one regular 8-pointed star polygon with vertex angle of 65° - composed of kites.
• Contains one regular 12-pointed star polygon with vertex angle of 60° - composed of kites.
• There are two non-regular reflective tiles (including 2 kites) and four reflective pairs.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 576 polygons.

1. Vol 2, Figure 130 (Barquq, Cairo, Egypt) of Hasan `Abd-al-Wahhab. Tarikh al-masajid al-athariyah, Cairo, 2 vols in Arabic, 1946. [wahhab] {The History of ancient Egyptian mosques}

v54