triangle
noun
tri·an·gle
| \ ˈtrī-ˌaŋ-gəl
\
\
Definition of triangle
1
: a polygon having three sides — compare spherical triangle
2a
: 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
triangle 1: 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 Web
The John Paul Jones–Tayshia Adams–Derek Peth love triangle came to an end this week in a surprising way. — Dana Rose Falcone, PEOPLE.com, "A Fan Favorite Shockingly Ends Their Time on Bachelor in Paradise: 'I Just Want to Find Somebody'," 2 Sep. 2019 Place the triangles into the bowl of margarita mix, let soak for 15 minutes. — Brianna Steinhilber, NBC News, "Margarita watermelon popsicles — plus 4 other summer cocktail hacks," 31 Aug. 2019 From the Granite State perspective, New Hampshire is the right-side-up triangle. — Felice Belman, BostonGlobe.com, "How to make friends in New Hampshire: A guide for would-be presidents," 29 Aug. 2019 Model Jordan Kimball decided to disrupt the love triangle between Harbor, Estrada and Lopez-Alvar by interrupting the private time between Estrada and Lopez-Alvar. — Tracy Swartz, chicagotribune.com, "Even Chris Harrison didn’t get to know the suburban Chicago contestant on ‘Bachelor in Paradise’," 19 Aug. 2019 By now, the love triangle has become the primary story line of the show, with all eyes (viewers and fellow contestants) on the trio, especially Hannah and her looming decision. — Ben Flanagan | [email protected], al, "The other Alabama Hannah at the center of ‘Bachelor in Paradise’," 14 Aug. 2019 Firefighters call these three elements the fire triangle. — Claire Wolters, National Geographic, "Wildfires, explained," 11 Aug. 2019 Elsewhere in 'Paradise' The other contestants try to make a splash, though the Caelynn-Blake-Kristina triangle is what gets the most air time. — David Oliver, USA TODAY, "'Bachelor in Paradise' premiere: Caelynn spills about Blake; Demi says I 'like who I like'," 5 Aug. 2019 The messy kitchen looks a lot like the kitchens the island was supposed to liberate us from: compact, enclosed, with good ventilation and the tight work triangle that saves the cook steps. — Alexandra Lange, Curbed, "The Big Little Lie of the TV kitchen island," 1 Aug. 2019These example sentences are selected automatically from various online news sources to reflect current usage of the word 'triangle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for triangle
triangle
noun
English Language Learners Definition of triangle
: a shape that is made up of three lines and three angles
: something that is shaped like a triangle
: a musical instrument that is made of a steel rod bent into the shape of a triangle and that you play by hitting with a metal rod
See the full definition for triangle in the English Language Learners Dictionary
triangle
noun
tri·an·gle
| \ ˈtrī-ˌaŋ-gəl
\
\
Kids Definition of triangle
1
: a flat geometric figure that has three sides and three angles
2
: something that has three sides and three angles
a triangle of land
3
: a musical instrument made of a steel rod bent in the shape of a triangle with one open angle
triangle
noun
tri·an·gle
| \ ˈtrī-ˌaŋ-gəl
\
\
Medical Definition of triangle
: a three-sided region or space and especially an anatomical one — see anterior triangle, carotid triangle, femoral triangle, posterior triangle, suboccipital triangle
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