Polyomino

Polyominoes are figures created by attaching multiple squares edge-to-edge. They are sorted based upon the number of squares they have.

Henominoes
There is a single henomino, consisting of one square by itself.

Dominoes
There is a single domino, consisting of two squares attached edge to edge.

Trominoes
There are two trominoes: the I tromino, consisting of three squares attached in a straight line, and the L tromino, consisting of a square with two other squares attached to the top and bottom.

Tetrominoes
There are five tetrominoes - the square tetromino (consisting of four squares in a square shape), the line tetromino (consisting of four squares in a straight line), the T tetromino (consisting of a square with three squares attached directly to it) and the L tetromino (consisting of three squares in a line then an additional square on the bottom at a right angle).

The tetromino with the largest edge length is the line tetromino, with an edge length of $$9l$$. The tetromino with the smallest edge length is the square tetromino, with an edge length of $$4l$$.

Pentominoes
There are twelve pentominoes. These are named, by their approximate shape: The pentomino with the largest edge length is the line pentomino, with an edge length of $$12l$$. The pentomino with the smallest edge length is the P pentomino, with an edge length of $$9l$$.
 * Line pentomino
 * L pentomino
 * P pentomino
 * R pentomino
 * S pentomino
 * T pentomino
 * U pentomino
 * V pentomino
 * W pentomino
 * X pentomino
 * Y pentomino
 * Z pentomino