For Exercises 24–28, you will find it useful to make yourself several copies of each of the polyominos (e.g., by cutting them out of graph paper).

Question 20.55

25. Apply alternative 1 of the Translation Criterion to the skew-tetromino and show how it can tile.

25.

Place the skew-tetromino on a coordinate system with unit length for the side of a square and with the lower left corner at (0, 0). Then and works.