Roman mosaic, Timgad
 
 
  data191/ROMAN87
(Click on image for high-quality PDF version)
 
 
 
 data191/ROMAN87
(Click on image for high-quality PDF version) 
 
 
All the shapes in the Timgad version are heavily ornamented, but the underlying pattern, shown here, is clear.
 
Geometry
 
 
-  The symmetry group of the tiling is 4*2 (p4g).
-  All the internal angles of the constituent polygons are a multiple of 45°.
-  Contains three squares.
-  Contains five regular two-pointed star polygons with vertex angle of 45°.
-  Contains one regular octagon.
-  The tiling does not satisfy the two-colour condition.
-  The tiling is not edge-to-edge.
-  As drawn, contains about 333 polygons.
 
References
 
 
Publications referenced: 
 
 
-  Pl 178 (f) (Timgad)  of Catherine Balmelle .... Le deÌcor geÌomeÌtrique de la mosaiÌque romaine, Paris, Picard,	2002.	ISBN 270840624.  [balmelle]  {2 vols}
   v54