Wooden ceiling
 
 
  data208/OK6
(Click on image for high-quality PDF version)
 
 
 
 data208/OK6
(Click on image for high-quality PDF version) 
 
 
Version with regular interlacing. For other presentation, see Wooden ceiling.
 
Geometry
 
 
-  The symmetry group of the tiling is *442 (p4m).
-  All the internal angles of the constituent polygons are a multiple of 9°.
-  Contains one regular octagon.
-  Contains one regular 8-pointed star polygon with vertex angle of 108°.
-  There are 6 non-regular reflective tiles (including 2 kites).
-  The tiling satisfies the interlace condition and has three finite interlaces and  no infinite interlace with straight cross-overs.
-  The tiling is edge-to-edge.
-  As drawn, contains about 185 polygons.
 
References
 
 
Publications referenced: 
 
 
-  Page 131 (Sha'ban Madrasah, Cairo, Egypt. Painted ceiling)  of Bernard O'Kane. The Mosques of Egypt, AUC, Cairo,	2016.	ISBN 978977416732.  [okane2]  {}(1368-9AD, 769-70AH)
   v54