Tunis: marble border in a mosque frieze

• The symmetry group of the tiling is *22∞ (p2mm).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains 8 squares.
• Contains two regular 8-pointed star polygons with vertex angle of 90°.
• There are four non-regular reflective tiles and two reflective pairs.
• The tiling is edge-to-edge.
• As drawn, contains about 53 polygons.

1. Plate 52 (Tunis, Tuisia. Marble border in a mosque frieze) of J Collin. Étude pratique de la décoration polygonale arabe, Paris, 1911. ISBN . [collin] {}

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