Tomb of Moulay Ishmael, Meknes

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 22.5°.
• Contains one regular octagon.
• Contains one regular 8-pointed star polygon with vertex angle of 45°.
• Contains one regular 16-pointed star polygon with vertex angle of 45°.
• There are 6 non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has one finite interlace and two infinite interlaces with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 359 polygons.

1. Page 91, Fig 3.71 (al-Ashraf Barsbay, Cairo, Egypt. Funerary complex) of Eric Broug. Islamic Geometric Design, Thames and Hudson, 2013. ISBN 978050051695. [broug2] {Many excellent photos}
2. Photo MOR 2430x (Tomb of Moulay Ishmael, Meknes, Morocco) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}
3. Plate 59 (Alaouia Madrasah, Tunis, Tunisia. Stained glass window) of J Collin. Étude pratique de la décoration polygonale arabe, Paris, 1911. ISBN . [collin] {}

• Wade photo MOR 2430x
• Wade photo EPC 071

• Escher's Alhambra tiling pattern

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