Qawsun, Koran

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains three equilateral triangles.
• Contains one regular four-pointed star polygon with vertex angle of 60°.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• Contains one regular 12-pointed star polygon with vertex angle of 90°.
• There are four non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has three finite interlaces and no infinite interlace with non-straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 619 polygons.

1. Page 45 (Qawsun mosque, Cairo, Egypt. Decorative page of the Koran from the mosque of Qeycoun (14th century)) of Prisse d'Avennes. Arabic Art in Color, Dover, 1877. ISBN 048623658. [d-avennes] {Contains 25 geometric patterns in colour, and gives the source in most cases more on the Internet.} Fuller version available on Internet.

• Tiling with three or more proper stars
• Tilings from copies of a Koran

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