Museum of the Sidi Sa'id, Marrakesh

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one regular two-pointed star polygon with vertex angle of 45°.
• Contains two regular 8-pointed star polygons with vertex angle of 90°.
• There are 11 non-regular reflective tiles (including one kite and one dart).
• The tiling satisfies the interlace condition and has three finite interlaces and one infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 769 polygons.

1. Figure 90, page 142 (Museum of Dar Sidi Sa'id, Marrakesh, Morocco. Perforated plaster window, no colour) of Rom Landau and Wim Swaan. Morocco: Marrakesh, Fez, Rabat, Elek Books Ltd, 1967. [landau] {London}

• Tiling whose tile angles are a multiple of 45° and whose lengths are p+q*sqrt(2).

Photo?

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