Triangle

Look up triangle in Wiktionary, the free dictionary.

A triangle is a geometric shape that has three straight sides.

Triangle may also refer to:

Mathematics

• Spherical triangle
• Sierpinski triangle
• Pascal's triangle
• Triangle wave
• Triangle inequality

Objects

• Triangle, another name for a set square, a tool used in technical drawing
• Triangle (instrument), a musical instrument.
• Triangle offense
• Triangle piercing, one of several forms of female genital piercing
• Triangle choke, a chokehold common to Brazilian Jiu-Jitsu
• Triangle Shirtwaist Factory fire of 1911
• Love triangle
• The Triangle, a student newspaper of Drexel University
• In systemics, a triangle is the structure of every system composed with three reciprocally connected/interrelated abstract or real objects
• Black Triangle (UFO)
• Triangle (Paris building), a proposed skyscraper in Paris
• Rack (billiards), a device for aligning the balls at the start of each game, often in the shape of a triangle

Places

• Triangle (Israel), a concentration of Israeli Arab towns in the Sharon plain
• Triangle Lake, Oregon
• Triangle, New York
• Triangle, Virginia
• Triangle, West Yorkshire, a village near Halifax, West Yorkshire
• Triangle, Newfoundland and Labrador
• Bass Strait Triangle
• Bermuda Triangle
• Golden Triangle
• Grandview Triangle
• Polynesian Triangle
• Rhubarb Triangle
• Sunni Triangle
• The Research Triangle, commonly referred to as "The Triangle", in North Carolina
• Triangle, Zimbabwe

Groups

Groups named Triangle include:

• Triangle Fraternity
• Princeton Triangle Club
• Triangle (Japanese pop group)

Music

• Triangle (instrument)
• Triangle (album), by Perfume
• Triangle (The Beau Brummels album)
• "Triangle", a song by Mami Kawada
• "Bizarre Love Triangle", a song by New Order

Entertainment

• Triangle (television), a former BBC soap opera
• The Triangle (miniseries), a mini-series on the Sci-Fi Channel
• "Triangle" (Buffy episode), a fifth-season episode of Buffy the Vampire Slayer
• "Triangle" (The X-Files), a sixth-season episode of The X-Files
• Acute Triangle (Welcome To Paradox), an episode of Welcome To Paradox
• Triangle (2007 film), a 2007 Hong Kong crime-thriller
• Triangle (2009 film), British psychological thriller

In medicine

A triangle is medical shorthand for differential diagnosis, and also is used anatomically to describle various structures, including:

• Femoral triangle
• Pubic triangle
• Anal triangle
• Cubital fossa (the triangle shape visible on the inside of the elbow joint)

See also

• Delta (letter) (disambiguating the Greek character Δ ("delta"), a triangle shape that is typographically distinct from the character ∆)
• The Triangle (another disambiguation page)
• Triangle of Life an earthquake preparedness theory
• Triangular function
• Triangular distribution, a probability distribution
• Triangulation
• Triangulum, a constellation
• Trinity
• Reuleaux Triangle
• Öçpoçmaq, a Tatar dish (name means "triangle")
• Wye (railroad), a three-way track junction
• The Triforce, a recurring object in The Legend of Zelda video games, shaped as three golden equilateral triangles

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