Editing Triangle (disambiguation)

{{wiktionary|Triangle|triangle|scalene triangle|triangular}}

A '''[[triangle]]''' is a geometric shape with three sides.
'''Triangle''' may also refer to:

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==Mathematics==
* [[Exact triangle]], a collection of objects in category theory
* [[Triangle inequality]], Euclid's proposition that the sum of any two sides of a triangle is longer than the third side
* American expression for [[set square]], an object used in engineering and technical drawing, with the aim of providing a straightedge at a right angle or other particular planar angle to a baseline
* The [[triangle graph]] in [[graph theory]]

==Entertainment==
===Music===
* [[Triangle (musical instrument)]], in the percussion family
* [[Tri Angle (record label)]], in New York and London
* [[Triangle (band)]] a Japanese pop group in 1970s
* [[The Triangles]], Australian band

====Albums====
* ''[[Tri-Angle]]'', a 2004 album by TVXQ
* [[Triangle (The Beau Brummels album)|''Triangle'' (The Beau Brummels album)]], 1967
* [[Triangle (Perfume album)|''Triangle'' (Perfume album)]], 2009
* [[Triangle (Diaura album)|''Triangle'' (Diaura album)]], 2014
* ''Triangle'', a 2008 album by [[Mi Lu Bing]]
* ''Triangle'', a 2011 EP by [[10,000 Maniacs]]

===Film===
* [[Triangle Film Corporation]], a film studio in the U.S. during the silent era
* [[The Triangle (film)|''The Triangle'' (film)]], a 2001 made-for-TV thriller
* [[Triangle (2007 film)|''Triangle'' (2007 film)]], a Hong Kong crime-thriller
* [[Triangle (2009 British film)|''Triangle'' (2009 British film)]], a British-Australian psychological thriller
* [[Triangle (2009 South Korean film)|''Triangle'' (2009 South Korean film)]], a South Korean-Japanese comedy
* ''The Triangle'', a 1953 film starring [[Douglas Fairbanks Jr.]]

===Television===
* [[The Triangle (miniseries)|''The Triangle'' (miniseries)]], a 2005 Sci-Fi Channel series
* [[Triangle (1981 TV series)|''Triangle'' (1981 TV series)]], a 1980s BBC soap opera
* [[Triangle (2014 TV series)|''Triangle'' (2014 TV series)]], a 2014 MBC Korean drama
* [[Triangle (Buffy the Vampire Slayer)|"Triangle" (''Buffy the Vampire Slayer'')]], 2001
* [[Triangle (The X-Files)|"Triangle" (''The X-Files'')]], 1998
* [[The Triangle (The Amazing World of Gumball)|"The Triangle" (''The Amazing World of Gumball'')]], 2015
* "Triangles", an episode of ''[[Private Practice (TV series)|Private Practice]]''

== Games ==

* [[Slapball (baseball)|Slapball]], a baseball street variant
* [[Triangle offense]], an offensive strategy used in basketball

== Places ==
* [[Bermuda Triangle]], area of the North Atlantic between Bermuda, Florida, and Puerto Rico
* [[Le Triangle]], a residential district in Montreal
* [[Triangle, Newfoundland and Labrador]], Canada
* [[Triangle (Israel)]], a concentration of Israeli Arab towns
* [[Triangle Region (Denmark)]] (''Trekanten''), a sub-region on the Jutland Peninsula
* [[Trianglen, Copenhagen]], a large intersection in Copenhagen, Denmark
* [[Research Triangle]], a region of North Carolina, U.S., anchored by Raleigh, Durham, and Chapel Hill
* [[Triangle, New York]], United States
* [[Triangle, Virginia]], United States
* [[Triangle, West Yorkshire]], a village in Calderdale, England
* [[Triangle, Zimbabwe]]

==Other uses==
* [[Triangle (chart pattern)]], in financial technical analysis
* [[Triangle (novel)|''Triangle'' (novel)]], a 1983 ''Star Trek'' novel
* [[Triangle (Paris building)]]
* [[Triangle (railway)]], an English term equivalent to a North American Wye rail
* [[Triangle Fraternity]], social fraternity for STEM Students
* Triangle Rewards, a loyalty program offered by [[Canadian Tire]]
* [[The Triangle (newspaper)|''The Triangle'' (newspaper)]], at Drexel University
* [[The Triangle, Manchester]], a building in England
* [[Triangles (novel)|''Triangles'' (novel)]], a 2011 novel by Ellen Hopkins
* [[Delta (letter)]], in the Greek alphabet, whose uppercase resembles a triangle (Δ)
* ''[[Trigonodes hyppasia]]'' or Triangles, a species of moth

==See also==
*[[Triangle Lake (disambiguation)]]
*[[Triangle Park (disambiguation)]]
*{{in title|Triangle}}
*[[Triangeln station]], a railway station in Malmö, Sweden
*[[Triangular trade]]
*[[Triangular election in France]]
*[[Triangulum (disambiguation)]]

{{disambiguation|geo}}