Ghiyathiyya madrasah, Khargird

The base pattern is shown in Khargerd - Ghiasiye Madrasah.

• The symmetry group of the tiling is *442 (p4m).
• Contains four squares.
• Contains two regular two-pointed star polygons with vertex angle of 45°.
• Contains one regular 8-pointed star polygon with vertex angle of 90°.
• There are 8 non-regular reflective tiles (including 3 kites) and three reflective pairs.
• The tiling satisfies the two-colour condition.
• The tiling is not edge-to-edge.
• As drawn, contains about 443 polygons.

1. Plate XI (Ghiyathiyya madrasah, Khargird, Iran. North east ivan) of Lisa Golombek and .... The Timurid architecture of Iran and Turan, Princeton, 1988. ISBN 069103587. [golombek] {2v, p495}(1447AD, 850AH)
2. Vol 3, Figure 97, page 97 (Ghiyathiyya madrasah, Khargird, 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.(1447AD, 850AH)
3. Fig 11.13c of Brian Wichmann and David Wade. Islamic Design: a Mathematical Approach, Springer, 2017. ISBN 978-3-319-69. [ww] {}

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