Mu'mina Khatun, Nakhchivan

• The symmetry group of the tiling is *442 (p4m).
• All the internal angles of the constituent polygons are a multiple of 7.5°.
• Contains three equilateral triangles.
• Contains one regular hexagon.
• Contains one regular octagon.
• Contains one regular 8-pointed star polygon with vertex angle of 105°.
• There are three non-regular reflective tiles (including one kite) and one reflective pair.
• The tiling satisfies the interlace condition and has two finite interlaces and no infinite interlace with straight cross-overs.
• The tiling is edge-to-edge.
• As drawn, contains about 429 polygons.

1. Fig 6 (a) (Mu'mina Khatun, Nakhchivan, Azerbaijan, Central Asia) of Peter Cromwell. Islamic geometric ornament ... in Azerbaijan, To be published, 2018. [cromwell4] {}(1186AD, 581AH)

v54