Number-cell challenges, group 8

From ISBN 1-899618-07-4. PP Class 71, [p4g,c4,d1], IH Class 71.

Statistics on this tiling:

• Tiling has symmetry p4g.
• Tiling has 4 polygons (with 20 edges) of which 1 are specified as copies of others.
• Edges are completely connected.
• Tiling is edge-to-edge.
• Tiling satisfies the two-polygon condition.
• Internal angles a multiple of 45°.
• Contains one non-regular polygon which has reflective symmetry.
• Contains: 2 squares.
• Tiling contains 193 polygons.

Summary of images