Editing Lozenge (shape) (section)

{{Short description|Quadrilateral with sides of equal length}}
{{redirect|◊||Diamond (disambiguation)}}
{{redirect|⟡|the extended play|Mujuk}}
{{Infobox symbol
|name=Lozenge
|mark=◊
|unicode = {{unichar|25CA|Lozenge|html=}}
|see also = {{unichar|2311|Square lozenge}}<br />{{unichar|29EB|Black lozenge}}<br />{{unichar|25C8|WHITE DIAMOND CONTAINING BLACK SMALL DIAMOND}}
}}

A '''lozenge''' ({{IPAc-en|ˈ|l|ɒ|z|ɪ|n|dʒ}}<ref>{{cite dictionary |url=https://www.macmillandictionary.com/dictionary/british/lozenge |title=lozenge |dictionary=[[Macmillan English Dictionary for Advanced Learners]]}}</ref> {{respell|LOZ|inj}}; symbol: {{char|◊}}), often referred to as a '''diamond''', is a form of [[rhombus]]. The definition of ''lozenge'' is not strictly fixed, and the word is sometimes used simply as a synonym ({{etymology|fro|{{wikt-lang|fro|losenge}}|}}) for ''rhombus''. Most often, though, lozenge refers to a thin rhombus—a rhombus with two acute and two obtuse angles, especially one with acute angles of 45°.<ref name="Mathworld">{{cite web|url=http://mathworld.wolfram.com/Lozenge.html |title=Lozenge - from Wolfram MathWorld |publisher=Mathworld.wolfram.com |date=2015-07-22 |access-date=2015-08-11}}</ref> The lozenge shape is often used in [[parquetry]] (with acute angles that are 360°/''n'' with ''n'' being an integer higher than 4, because they can be used to form a set of [[tile]]s of the same shape and size, reusable to cover the plane in various geometric patterns as the result of a tiling process called [[tessellation]] in mathematics) and as [[decorative art|decoration]] on [[ceramics (art)|ceramics]], [[Silver (household)|silverware]] and [[textile]]s. It also features in [[heraldry]] and [[Suit (cards)|playing cards]].