Mosque of Qarasunqur, Cairo

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains one equilateral triangle.
• Contains one regular four-pointed star polygon with vertex angle of 60°.
• Contains one regular 12-pointed star polygon with vertex angle of 90°.
• There are three non-regular reflective tiles.
• The tiling satisfies the interlace condition and has one finite interlace and one infinite interlace.
• The tiling is edge-to-edge.
• As drawn, contains about 217 polygons.

• Figure 11 (Source not given, but no early examples are known) of A. J. Lee. Islamic star patterns, Muqarnas vol. 4. pp182-197 Pressmark PP.8.M, 1987. [lee] {Important paper on star patterns} Available on Internet.
• Thesaurus Islamicus F2822 M31P0007 (Cairo, mosque of Qarasunqur, Egypt) of Not specific. Personal Communication, Information sent to the author, 21 century . [pc]

• Tiling with star polygons with 12 points whose vertex angle is 90°

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