Two Polygons, PP Class 40, [p31m,c3,c1], IH Class 30.

T00957 = data149/NEW44

data149/NEW44 (Click on image for high-quality PDF version)

Geometry

The symmetry group of the tiling is 3*3 (p31m).
All the internal angles of the constituent polygons are a multiple of 30°.
Contains two equilateral triangles.
There are one non-regular reflective pairs and no tiles with no mirror image.
The tiling satisfies the two-colour condition.
The tiling is edge-to-edge.
The tiling satisfies the two-polygon condition.
As drawn, contains about 77 polygons.

References

Publications referenced:

PP Class 40, [p31m,c3,c1], IH Class 30 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.

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