Exhibit at British Museum

• 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 8-pointed star polygon with vertex angle of 90°.
• Contains one regular 8-pointed star polygon with vertex angle of 45°.
• There are four non-regular reflective tiles (including one kite).
• The tiling satisfies the interlace condition and has two finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 213 polygons.

1. Photo from Dirk Booms (Wooden panel from medieval Sicily) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1125-95AD, 518-90AH)

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

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