Word.ws English Dictionary

Plural of triangle

regular plural

The plural of triangle is triangles.

Forms of triangle

Singulartriangle /ˈtɹaɪəŋɡəl/
Pluraltriangles
Countablecountable

Triangles in a sentence

  • It is possible to tessellate the plane with equilateral triangles and regular hexagons.From the entry tessellate
  • The Pythagorean theorem only applies to right triangles.From the entry Pythagorean theorem
  • All triangles, all rectangles, and all cyclic quadrilaterals are cyclic-inscriptable.From the entry cyclic-inscriptable
  • This property holds for all polygons; and since, by definition, all triangles are polygons, it holds for all triangles.From the entry by definition
  • Homemade samosas are a world away from those dry cardboard triangles sold under the name in supermarkets.2023 June 7, Felicity Cloake, “How to make vegetable samosas – recipe”, in The Guardian, →ISSN. From the entry samosa

Meaning of triangle

  1. noun A polygon with three sides and three angles.
  2. noun A set square.
  3. noun A percussion instrument made by forming a metal rod into a triangular shape which is open at one angle. It is suspended from a string and hit with a metal bar to make a resonant sound.

Full definition of triangle

Questions about the plural of triangle

What is the plural of triangle?
The plural of triangle is triangles.
Is triangle countable?
Triangle is a countable noun.

Source and license

Adapted from Wiktionary: triangle (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Plural of triangle.” Word.ws, https://word.ws/plural/triangle. Based on Wiktionary, CC BY-SA 4.0.