A pentomino (or 5-omino) is a polyomino of order 5; that is, a polygon in the plane made of 5 equal-sized squares connected edge to edge. The term is derived from the Greek word for ' 5 ' and "domino". When rotations and reflections are not considered to be distinct shapes, there are 12 different free pentominoes.

五格骨牌（Pentomino），又称五连块、五连方、五连方块或伤脑筋十二块，是由五个全等正方形连成的多格骨牌，反射或旋转视作同一种共有十二种，可以英文字母代表。

潘多米诺，英文pentomino，是五子相连的意思。 它是一种拼图或者积木，共有12块，每块以五个全等的正方形连成。 我们称它为伤脑筋12块，也称五格骨牌，也可以称五连魔方。 由5个边长想通的正方形在平面边与连起来组成的图形只有12种。

Make puzzles by doubling or tripling pentomino dimensions. Download the GeoGebra file.

5 天之前 · A pentomino is a 5-polyomino. There are 12 free pentominoes, 18 one-sided pentominoes, and 63 fixed pentominoes. The twelve free pentominoes are known by the letters of the alphabet they most closely resemble: f, I, L, N, P, …

Pentominoes are figures that operate with five square blocks joined edge to edge to form different mixtures. There are twelve achievable shapes in a set of distinctive pentominoes that are …

The word “Pentominoes” is a combination of pent and – ominoes, where pent means “five”, and – omino means “all together”. There are 12 different pentomino shapes, identified by letters of the alphabet: You can also see how each letter breaks apart into five squares in the image below:

五连方块 （pentomino）是由五个方格组成的多连方块。 各方格横向相连而得的五连方块有 12 种，其中 6 种有镜像形，总共 18 种。 俄罗斯方块准则 暂未对五连方块的配色作出强制规定。

2007年7月27日 · A pentomino is a polyomino composed of five (Greek πέντε / pente) congruent squares, connected orthogonally. There are twelve different pentominoes, and they are named after the letters of the Latin alphabet that they resemble.

2022年8月24日 · Each pentomino piece has a single-letter name that, to one degree or another, evokes the shape of that piece: This site examines the four “classic” rectangular pentomino puzzles, some variations of the 8×8 puzzle, and a number of “degenerate” cases, that is, puzzles that are too small to contain all 12 pentominos, such as the 5×5 puzzle.