Byzantine mosaic

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 30°.
• Contains five equilateral triangles.
• Contains two squares.
• The tiling satisfies the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 215 polygons.

1. Page 163, Figure 18.7d (Byzantine mosaic) of Peter S Stevens. Handbook of regular patterns: an introduction to symmetry in two..., MIT Press, 1984. ISBN 026269088. [stevens] {Illustrations in black and white}

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