al-Zahir Mausoleum, lattice window, Cairo, Egypt

• The symmetry group of the tiling is *632 (p6m).
• All the internal angles of the constituent polygons are a multiple of 60°.
• Contains one regular two-pointed star polygon with vertex angle of 60°.
• Contains one regular hexagon.
• Contains two regular 6-pointed star polygons with vertex angle of 60°.
• There are two non-regular reflective tiles.
• The tiling satisfies the interlace condition and has one finite interlace and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 131 polygons.

1. Photo by David Wade: EGY 1301 (al-Zahir Mausoleum, Cairo, Egypt. Lattice window) of David Wade. Website: patterninislamicart.com, UK, 2015. [wadei] {Website}(1474AD, 878AH)

• Wade photo EGY 1301

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