Triomino -- from Wolfram MathWorld

A triomino, also known as a tromino, is a 3-polyomino. There are two free polyominoes, (the same) two one-sided polyominoes, and 6 fixed polyominoes. The free polyominoes are known as the L-triomino (or right triomino) and straight triomino, respectively. There is also a game called triomino consisting of 55 equilateral triangles, each containing three numbers from 0 to 5 at each vertex. Every combination of tiles is in the game, although those tiles with three different values are allowed

Exploring Tetris as a Transformation Semigroup

Épinglé sur Mates

Trinomial Coefficient -- from Wolfram MathWorld

Polyomino -- from Wolfram MathWorld

Exploring Tetris as a Transformation Semigroup

三格骨牌- 维基百科，自由的百科全书

Exploring Tetris as a Transformation Semigroup

Fault-Free Tilings - Wolfram Demonstrations Project

Tessellation Patterns - From Mathematics to Art

Domino and Triomino Tilings of a Chessboard - Wolfram

Fibonacci Cube Graph -- from Wolfram MathWorld

Triominos

Poliòmino - Viquipèdia, l'enciclopèdia lliure