Sifahidiye Madrasah, Sivas

• The symmetry group of the tiling is *5.0• (d5.0).
• All the internal angles of the constituent polygons are a multiple of 36°.
• Contains 10 regular pentagons.
• Contains two regular 10-pointed star polygons with vertex angle of 108°.
• There are three non-regular reflective tiles and five tiles with no mirror image.
• The tiling is not edge-to-edge.
• As drawn, contains about 341 polygons.

1. Photo by Dick Osseman (Sifahidiye Madrasah, Sivas, Turkey) of Not specific. Personal Communication, Information sent to the author, 21c. [pc] (1277AD, 675AH)
2. Fig A.24 of Brian Wichmann and David Wade. Islamic Design: a Mathematical Approach, Springer, 2017. ISBN 978-3-319-69. [ww] {}

• Tilings with coloured interlacing

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