Window grill from the Yemen

T00374 = data14/P30B

data14/P30B (Click on image for high-quality PDF version)

Geometry

The symmetry group of the tiling is *442 (p4m).
All the internal angles of the constituent polygons are a multiple of 45°.
Contains two squares.
There are three non-regular reflective tiles.
The tiling does not satisfy the two-colour condition.
The tiling is not edge-to-edge.
As drawn, contains about 168 polygons.

References

Publications referenced:

Page 30 bottom (Yemen. Window grill) of Robert Field. Geometric Patterns from Islamic Art and Architecture, Tarquin Publications, 1998. ISBN 189961822. [field4]

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