triangle

== English == === Etymology === From Middle English triangle, from Old French triangle, from Latin triangulum, noun use of adjective triangulus (“three-cornered, having three angles”), from trēs (“three”) + angulus (“corner, angle”), equivalent to tri- +‎ -angle. === Pronunciation === (UK) IPA(key): /ˈtɹaɪəŋɡəl/, /ˈtɹaɪˌæŋɡəl/ (US) enPR: trī'-ăng-gəl, IPA(key): /ˈtɹaɪˌæŋɡəl/ Rhymes: -aɪæŋɡəl Hyphenation: tri‧an‧gle Rhymes: -æŋɡəl === Noun === triangle (plural triangles) (geometry) A polygon with three sides and three angles. (US, Canada) A set square. (music) 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. (billiards) A triangular piece of equipment used for gathering the balls into the formation required by the game being played. A love triangle. 2009, Neil McDonald, Quadrant, November 2009, No. 461 (Volume LIII, Number 11), Quadrant Magazine Limited, page 104: One of the writers' most pleasing inventions was to treat the triangle love story as comedy. (systemics) The structure of systems composed with three interrelated objects. A draughtsman's square in the form of a right-angled triangle. (historical, usually in the plural) A frame formed of three poles stuck in the ground and united at the top, to which people were bound for corporal punishment. Any of various large papilionid butterflies of the genus Graphium. Synonym: bluebottle (rail transport) A triangular formation of railway tracks, with a curve on at least one side. Synonym: wye ==== Synonyms ==== (polygon): threeside, trigon (rare) (love triangle): love triangle, menage à trois See also Thesaurus:triangle See also △ (symbol) ==== Derived terms ==== ==== Translations ==== ==== Further reading ==== Triangle on Wikipedia.Wikipedia Triangle (disambiguation) on Wikipedia.Wikipedia Triangle (instrument) on Wikipedia.Wikipedia === Anagrams === INTEGRAL, alerting, altering, integral, relating, tanglier, teraglin == Catalan == === Etymology === Borrowed from Latin triangulum. === Pronunciation === IPA(key): (Central, Balearic) [tɾiˈaŋ.ɡlə] IPA(key): (Valencia) [tɾiˈaŋ.ɡle] === Noun === triangle m (plural triangles) (geometry) triangle (music) triangle ==== Related terms ==== triangular === Further reading === “triangle”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007 “triangle”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026 “triangle” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua. “triangle” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962. == French == === Etymology === Borrowed from Latin triangulum. By surface analysis, tri- +‎ angle. === Pronunciation === IPA(key): /tʁi.jɑ̃ɡl/ === Noun === triangle m (plural triangles) (geometry) triangle (polygon) triangle équilatéral ― equilateral triangle triangle isocèle ― isosceles triangle (music) triangle (percussion instrument) ==== Derived terms ==== triangle amoureux triangle de sécurité triangulaire === Further reading === “triangle”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012 === Anagrams === intégral