# triangle

- 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.
- (initial capital letter) Astronomy. the constellation Triangulum.

## Origin of triangle

## Related Words for triangle

affair, love, relationship, dalliance, fling, adultery, tryst, liaison, passion, flirtation, involvement, courtship, infidelity, devotion, chop, wedge, portion, sliver, threesome, triumvirate## Examples from the Web for triangle

### Contemporary Examples of triangle

Each side of the triangle will measure five miles in width, a foot in depth, and nearly 307 miles in length.

Legambiente has been warning of the equivalent of an environmental apocalypse in the triangle of death for years.

Italy’s Triangle Of Death: Naples Residents Blame Child Cancer Rates On Mob Disposal Of Toxic ChemicalsBarbie Latza Nadeau

November 21, 2013

It was not conceived for what Tel Aviv has become and what the East Jerusalem-Ramallah-Hebron triangle will inevitably become.

How The Israeli-Palestinian Peace Process Became The World's Greatest BoreBernard Avishai

April 16, 2013

But she did like Ben Dahan: she said he made her rethink the “triangle.”

The triangle is “like a rubber band wound up in a toy propeller,” Turner says.

### Historical Examples of triangle

When I asked the meaning of this, they showed me a triangle.

PhilotheaLydia Maria Child

And he points out that within the triangle was the Svastika cross.

The Non-Christian CrossJohn Denham Parsons

This triangle they filled with a thinner stone carved with two lions.

Buried Cities: Pompeii, Olympia, MycenaeJennie Hall

And directly in front of it are three other stars in the form of a triangle.

The Chinese Fairy BookVarious

They were alone, too, for the Gnomes had not entered the door of triangle.

## triangle

- 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 viewSee 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

## Word Origin for triangle

## Word Origin and History for triangle

late 14c., from Old French triangle (13c.), from Latin triangulum "triangle," from neuter of adj. triangulus "three-cornered," from tri- "three" (see tri-) + angulus "corner, angle" (see angle (n.)).

In the huts of witches all the instruments and implements are triangular. ["Handwörterbuch des deutschen Aberglaubens"]

## triangle

(trī′ăng′gəl)- A three-sided area, space, or structure.

## triangle

- A closed geometric figure consisting of three sides.

## Idioms and Phrases with triangle

## triangle

see eternal triangle.