This particular tessellation is full of angles measuring 20 degrees, 40 degrees, and other angles which are not constructable using the traditional rules of Euclidean constructions. This is because this tessellation is based on a matrix which includes regular enneagons.
RobertLovesPi.net 
More beautiful tessellations. 🙂
I wonder if you’ll ever run out of new interesting patterns to make. I hope not.
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I’m not worried. 🙂
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