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Tetromino:
A geometric shape composed of four squares, which are connected orthogonally is called a Tetromino.
- The name "Tetromino" is a combination of the prefix tetra - "four" (from Ancient Greek), and "domino" ( a traditional tile-based game from China).
- To further understand tetromino, it is essential to know about Domino & Trinomino.
Domino:
- Two unit squares of each \(1\)\(cm\) are joined together (edge to edge) to form a Domino.
Trinomino:
- Similarly, Three unit squares of each \(1\)\(cm\) are joined together (edge to edge) to form a Trinomino.
- The word “Tri” means three. Hence, joining three squares is called "Trinomino".
Important!
But unlike Domino, Trinomino can also be arranged into four other different ways.
They are as follows:
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