Roman Mosaic from Aldborough, Yorks

• The symmetry group of the tiling is 442 (p4).
• All the internal angles of the constituent polygons are a multiple of 45°.
• There are no non-regular reflective pairs and one tile with no mirror image.
• The tiling satisfies the interlace condition and has no finite interlace and one infinite interlace.
• The tiling is edge-to-edge.
• As drawn, contains about 71 polygons.

• Page 28, Figure 7D (Colouring not known) of D S Neal. Roman mosaics in Britain, Society for the Promotion of Roman studies, 1981. ISBN 090776414. [neal] {Beautiful publication.}
• Page 8 number 5 of David Wade. Pattern in Islamic Art, Studio Vista, 1976. ISBN 028970719. [wade] {Some beautiful coloured patterns, but source not given.}

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