Saadian Tombs, Marrakesh

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 15°.
• Contains four regular hexagons.
• Contains 6 regular 12-pointed star polygons with vertex angle of 60°.
• There are 12 non-regular reflective tiles (including 2 kites) and one reflective pair.
• The tiling satisfies the interlace condition and has five finite interlaces and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 1339 polygons.

1. Internet photo from Alberto Leon (Saadian Tombs, Marrakesh, Morocco) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1603AD, 1011AH)
2. Fig 11.5 of Brian Wichmann and David Wade. Islamic Design: a Mathematical Approach, Springer, 2017. ISBN 978-3-319-69. [ww] {}
3. Vol1, pg 409 (The Sttiniya, Marrakesh, Morocco) of Paccard, André. Traditional Islamic craft in Moroccan architecture, Saint-Jorioz, France, 1980. ISBN 286486003. [paccard] {2 v. : ill. (some col.) ; 31 cm.}

• Tilings with coloured interlacing

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