Roman mosaic, Ostie

• The symmetry group of the tiling is *2222 (pmm).
• All the internal angles of the constituent polygons are a multiple of 60°.
• Contains one regular two-pointed star polygon with vertex angle of 60°.
• Contains one regular hexagon.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 54 polygons.

1. Pl 213 (a,b,c) (Ostie, Catane, Carthage) of Catherine Balmelle .... Le décor géométrique de la mosaïque romaine, Paris, Picard, 2002. ISBN 270840624. [balmelle] {2 vols}
2. Plate 7c (Agra, India) of Susan Stronge. Indian Architectural Designs, Harry N Abrams, Inc, 1989. ISBN 081093905. [stronge] {A collection of 30 screen designs from the Victoria and Albert Museum.}

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