Janpanah, Abbasi Courtyard, Mashhad

• The symmetry group of the tiling is 6.5• (c6.5).
• All the internal angles of the constituent polygons are a multiple of 60°.
• There are no non-regular reflective pairs and two tiles with no mirror image.
• The tiling is not edge-to-edge.
• As drawn, contains about 12 polygons.

1. Fig A.28 of Brian Wichmann and David Wade. Islamic Design: a Mathematical Approach, Springer, 2017. ISBN 978-3-319-69. [ww] {}
2. Vol 1, page 116 (Janpanah, Abbasi Courtyard, Mashhad, Iran) of Mahmood Maher al-Naqsh. Design and execution of drawing in Iranian tilework, Islamic period, Reza Abbasi Museum, 1983. [iran] {Good collection of Iranian patterns, text in Persian} Available on Internet.

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