3½-ominoes
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updated April 28, 2023

Description

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These are all 14 possible combinations of three squares and one
triangle in the shape of a half square. These pieces are called
3½-ominoes. Various interesting shapes can be tiled with them,
including a side 7 square as shown in the picture.

 

https://polyominoes.co.uk/35omino/35omino.html

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The author marked this model as their own original creation.

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