polyiamond

English

3 different polyiamonds consisting of four triangles.

Etymology

Blend of poly- +‎ diamond, the polyiamond made up of two triangles being a diamond or rhombus.

Noun

polyiamond (plural polyiamonds)

1. (geometry) A polyform made by joining one or more equilateral triangles edge to edge in various arrangements. Every polyiamond corresponds to a polyhex,

Synonyms

• n-iamond

Derived terms

Derived terms

• diamond
• hexiamond
• moniamond
• triamond
• tetriamond
• pentiamond

Name	Number of forms	Forms
moniamond	1
diamond	1
triamond	1
tetriamond	3
pentiamond	4
hexiamond	12	bar rhomboid crook club crown sphinx snake yacht chevron bat signpost pistol lobster hook shoe hexagon butterfly

Some authors also call the diamond (rhombus with a 60° angle) a calisson after the French sweet of similar shape.

Related terms

• diamond
• polyomino

See also

• bar
• butterfly
• chevron
• crook
• crown
• hexagon
• hook
• lobster
• signpost
• snake
• sphinx
• yacht

Anagrams

• polydomain