Mausoleum of Moulay Ismail

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 22.5°.
• Contains three regular 8-pointed star polygons with vertex angle of 90°.
• Contains one regular 16-pointed star polygon with vertex angle of 45°.
• There are 13 non-regular reflective tiles (including 2 kites).
• The tiling satisfies the interlace condition and has four finite interlaces and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 879 polygons.

1. Internet photo, Charles O. Cecil (Mausoleum of Moulay Ismail, Meknes, Morocco. Geometric Ceiling Decoration) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

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