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View synonyms for

triangle

[trahy-ang-guhl]

noun

  1. a closed plane figure having three sides and three angles.

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

  3. any three-cornered or three-sided figure, object, or piece.

    a triangle of land.

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

  5. a group of three; triad.

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

  7. Astronomy.Triangle, the constellation Triangulum.



triangle

/ ˈٰɪˌæŋɡə /

noun

  1. 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

  2. any object shaped like a triangle

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

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

  5. a group of three

“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

triangle

  1. A closed geometric figure consisting of three sides.

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Other Word Forms

  • triangled adjective
  • ˈٰˌԲ adjective
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Word History and Origins

Origin of triangle1

First recorded in 1350–1400; Middle English, from Latin triangulum, noun use of neuter of triangulus “t-ǰԱ”, tri-, angle 1
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Word History and Origins

Origin of triangle1

C14: from Latin triangulum (noun), from triangulus (adjective), from tri- + angulus corner
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Idioms and Phrases

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Example Sentences

Examples have not been reviewed.

In a regular rom-com, this would be the setup for a classic love triangle.

From

Once again, Song uses a love triangle plot to explore her ideas about self-actualization.

From

“Every team gets one of these,” said McCabe as he picked up a metal figure made of two concentric triangles from his desk.

From

After Pena avoided an arm triangle, Harrison switched to a kimura with seconds remaining in the round before securing the finish.

From

They are best seen rising in the east after sunset, forming a huge triangle overhead.

From

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Triandatriangle inequality