Editing Tetromino (section)

===Filling a rectangle with two sets of tetrominoes===
Two sets of free or one-sided tetrominoes can fit into a rectangle in different ways, as shown below:

{{multiple image 
| align=left
| image_style = border:none;
| image_gap = 25
| image1 = Tetromino Tiling 8x5.svg
| width1=114
| caption1 = Two sets of free tetrominoes in a 5×8 rectangle
| image2 = Tetromino Tiling 10x4.svg
| width2=150
| caption2 = Two sets of free tetrominoes in a 4×10 rectangle
| image3 = Tetromino Tiling 8x7.svg
| width3=120
| caption3 = Two sets of one-sided tetrominoes in a 8×7 rectangle
| image4 = Tetromino Tiling 14x4.svg
| width4=200
| caption4 = Two sets of one-sided tetrominoes in a 14×4 rectangle
}}
{{-}}