A pentomino is a 2D shape made out of 5 side-by-side equal-sized squares. They can be found in the books Chasing Vermeer and The Wright 3. It was created by Solomon W. Golomb.
These are the 12 pentominos:
Other websites[change | change source]
- All about pentominoes Archived 2008-05-11 at the Wayback Machine