It's interesting how your eye naturally groups the pentagons into the larger primitive unit, like the pinwheels of type 5. Wolfram Alpha also has some things a

It's interesting how your eye naturally groups the pentagons into the larger primitive unit, like the pinwheels of type 5. Wolfram Alpha also has some things about tiling: http://www.wolframalpha.com/input/?i=pentagon+tiling http://www.wolframalpha.com/input/?i=pentagon+tiling http://www.wolframalpha.com/input/?i=pentagon+type+5+tiling http://www.wolframalpha.com/input/?i=pentagon+type+5+tiling