Fold Pentominoes from a Loop of Triangles
If you form a loop out of twenty right isosceles triangles, you can fold this loop flat to form any of the twelve pentominoes.
- Cut out the two strips of triangles from the pattern sheet and fold creases along the dashed lines.
- Glue the strips together to form a loop of twenty triangles.
- Fold the loop along the creases to form any of the pentominoes.