Field, Roman Mosaics, page 16

From Silchester and Hadrian's Villa at Tivoli. Also as a window grill in Salisbury Cathedral, see, Field page 35, but in different proportions.

This pattern is a member of an interesting class of mathematical patterns. PP Class 59, [p4,c4,c1], IH Class 28.

Statistics on this tiling:

• Tiling has symmetry p4.
• Tiling has 2 polygons and 10 edges.
• Edges are completely connected.
• Tiling is not edge-to-edge.
• Tiling satisfies the two-polygon condition.
• Internal angles a multiple of 90°.
• Contains one non-regular polygon which has reflective symmetry.
• Contains: one square.
• Tiling contains 226 polygons.

Summary of images