# triangle

*triangle*on Thesaurus.com

a closed plane figure having three sides and three angles.

a flat triangular piece, usually of plastic, with straight edges, used in connection with a T square for drawing perpendicular lines, geometric figures, etc.

any three-cornered or three-sided figure, object, or piece: a triangle of land.

a musical percussion instrument that consists of a steel triangle, open at one corner, that is struck with a steel rod.

a group of three; triad.

a situation involving three persons, especially one in which two of them are in love with the third.

Triangle, Astronomy. the constellation Triangulum.

## Origin of triangle

^{1}

## Other words from triangle

- triangled, adjective

## Words Nearby triangle

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

## How to use triangle in a sentence

For example, you can change drawing A into drawing B by flipping the

*triangle*made by nodes 1, 2 and 3 over the edge connecting nodes 2 and 3.A New Algorithm for Graph Crossings, Hiding in Plain Sight | Stephanie DeMarco | September 15, 2020 | Quanta MagazineA

*triangle*with sides of all different lengths is “scalene,” or “unequal.”Why Mathematicians Should Stop Naming Things After Each Other - Issue 89: The Dark Side | Laura Ball | September 2, 2020 | NautilusThere is the classic

*triangle*, a sturdy square, and you may even see some rectangular shapes if you are dealing with a nice flatbread.Pizza cutters that will get you the slice of your dreams | PopSci Commerce Team | September 2, 2020 | Popular-ScienceFor the four Platonic solids built out of squares or equilateral triangles — the cube, tetrahedron, octahedron and icosahedron — mathematicians recently figured out that the answer is no.

Mathematicians Report New Discovery About the Dodecahedron | Erica Klarreich | August 31, 2020 | Quanta MagazineLike the

*triangle*and the quadrilateral, the N-gon with the maximum area was a regular N-gon, with equal side lengths and angles.

This Texas

*triangle*now has the same population as the entire State of Florida.The scorned party in a love-

*triangle*, he blew his head off while serving overnight tower duty in 2007.For her first film, she played a woman caught in a love

*triangle*between a nightclub owner and a country boy.We kept joking about the show evolving and blossoming from this love

*triangle*into this five-pointed star.Kerry Washington’s Favorite ‘Scandal’ Season 3 Moments | Kerry Washington | August 8, 2014 | THE DAILY BEASTIn reading about ASHA, its current location is hard to overlook—Research

*triangle*, North Carolina.STI Awareness Month Is Nothing More Than a Hallmark Holiday for Condoms | Kent Sepkowitz | April 18, 2014 | THE DAILY BEASTOn the other hand, the arrows along the sides of the

*triangle*represent actual circulation.Readings in Money and Banking | Chester Arthur PhillipsHe was a narrow-headed man with frail-looking sloped shoulders and a thin

*triangle*of face.There are sixty thousand acres of mighty good spruce in that

*triangle*between us, and it's as good as ours.Scattergood Baines | Clarence Budington Kelland(e) No part of the counter shall intersect a

*triangle*or the produced perpendicular thereof shown on p. 186.Yachting Vol. 2 | Various.A third game was called trign, and was played by three persons, stationed at the angles of an equilateral

*triangle*.The Private Life of the Romans | Harold Whetstone Johnston

## British Dictionary definitions for triangle

/ (ˈtraɪˌæŋɡəl) /

geometry a three-sided polygon that can be classified by angle, as in an acute triangle, or by side, as in an equilateral triangle. Sum of interior angles: 180°; area: 1/2 base × height

any object shaped like a triangle

any situation involving three parties or points of view: See also eternal triangle

music a percussion instrument consisting of a sonorous metal bar bent into a triangular shape, beaten with a metal stick

a group of three

## Origin of triangle

^{1}

## Derived forms of triangle

- triangled, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Scientific definitions for triangle

[ trī′ăng′gəl ]

A closed geometric figure consisting of three sides.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## Other Idioms and Phrases with triangle

see eternal triangle.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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