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Four-and-a-half-ominoes
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4½-ominoes
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Model information
- Source
- Printables
- Category
- Puzzles & Brain-teasers
- License
- Creative Commons — Public Domain
These are all 54 possible combinations of four squares and one
triangle in the shape of a half square. These pieces are called
4½-ominoes. Various interesting shapes can be tiled with them,
including three side 9 squares as shown in the picture.