: a percussion instrument consisting of a rod of steel bent into the form of a triangle open at one angle and sounded by striking with a small metal rod
b
: a drafting instrument consisting of a thin flat right-angled triangle of wood or plastic with acute angles of 45 degrees or of 30 degrees and 60 degrees
3
: a situation in which one member of a couple is involved in a love affair with a third person
Illustration of triangle
1 equilateral
2 acute
3 obtuse
4 scalene
5 isosceles
6 right triangle
Examples of triangle in a Sentence
She cut the sandwiches into triangles.
Recent Examples on the WebRozier constructs his love triangle (or, rather, square) without an ounce of melodrama, focusing as much on the vacation’s languorous atmosphere—and its giddy effect on the friends’ inside jokes and childish slapstick—as on the slow-burn plot.—Samantha Bergeson, IndieWire, 15 July 2024 The tension blew up with the Brenda/Dylan/Kelly love triangle.—Rob Sheffield, Rolling Stone, 14 July 2024 There’s no dull day at the beach as each episode is full of crazy romance, drama, love triangles, and endless drinking at the tiki bar.—Rendy Jones, EW.com, 13 July 2024 Each star in the triangle is part of its own constellation.—Dean Regas, The Enquirer, 13 July 2024 See all Example Sentences for triangle
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'triangle.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
Etymology
Middle English, from Anglo-French, from Latin triangulum, from neuter of triangulus triangular, from tri- + angulus angle
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