Tomb of Sultan Qalawun

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains two regular hexagons.
• Contains one regular 6-pointed star polygon with vertex angle of 60°.
• There are two non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has one finite interlace and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 311 polygons.

1. E.3842:112-1938 (Qalawun, Cairo, Egypt. Sketchbook by James Wild) of V&A collections website. Website: collections.vam.ac.uk, UK, 2015. [vami] {Website}

• V&A record sketchbook...

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