Posting this, as several people have been playing around with pentagons lately:
The 14 Different Types of Convex Pentagons that Tile the Plane (at mathpuzzle.com)
a wonderful set of visual examples of the 14 known tilings.
I found (re-found?) this site, from another site I have bookmarked- Marjorie Rice’s pentagonal tessellation page:
worth looking at as well, especially this design…