Abu’l Qasim shrine, Herat

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 5°.
• Contains one regular four-pointed star polygon with vertex angle of 40°.
• Contains one regular 12-pointed star polygon with vertex angle of 90°.
• There are four non-regular reflective tiles (including one kite).
• The tiling satisfies the two-colour condition.
• The tiling is edge-to-edge.
• As drawn, contains about 191 polygons.

1. Page 248, Fig. 113b (Abu’l Qasim shrine, Herat, Afghanistan, Central Asia) of Jay Bonner. Islamic Geometric Patterns, Springer, 2016. ISBN 978144190216. [bonner] {Largest Islamic tile collection in print}(1492AD, 897AH)

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