Two Polygons, PP Class 55, [p3ml,d3,d1], IH Class 35.
 
 
 
 
 
 
 data149/B13
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Geometry
 
 
-  The symmetry group of the tiling is *333 (p3m1).
 -  All the internal angles of the constituent polygons are a multiple of 30°.
 -  Contains one equilateral triangle.
 -  There is one non-regular reflective tile.
 -  The tiling does not satisfy the two-colour condition.
 -  The tiling is edge-to-edge.
 -  The tiling satisfies the two-polygon condition.
 -  As drawn, contains about 59 polygons.
 
 
 
 
References
 
 
Publications referenced: 
 
 
-  PP Class 55, [p3ml,d3,d1], IH Class 35 of S J Dawes and B A Wichmann. A New Class of Tilings with Two Prototiles, Visual Mathematics, Vol 3, No 4.,	2001.	 [dawes]  {Revises CD/booklet.} Available on Internet.
 
 
  Photo?  
   v54