polyiamond

== English == === Etymology === Blend of poly- +‎ diamond, the polyiamond made up of two triangles being a diamond or rhombus. === Pronunciation === === Noun === polyiamond (plural polyiamonds) (geometry) A polyform made by joining one or more equilateral triangles edge to edge in various arrangements, with every polyiamond corresponding to a polyhex. ==== Synonyms ==== n-iamond ==== Derived terms ==== 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