Penmaenuchaf Hall Hotel

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 45°.
• Contains one square.
• There are two non-regular reflective tiles.
• The tiling does not satisfy the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 129 polygons.

1. Holiday photo (Penmaenuchaf Hall Hotel, ceiling, 1860 AD) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]

Photo?

v54