Triangle (disambiguation)

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

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

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), 1967
 * Triangle (Perfume album), 2009
 * 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), a 2001 made-for-TV thriller
 * Triangle (2007 film), a Hong Kong crime-thriller
 * Triangle (2009 British film), a British-Australian psychological thriller
 * Triangle (2009 South Korean film), a South Korean-Japanese comedy
 * The Triangle, a 1953 film starring Douglas Fairbanks Jr.

Television

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

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), 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 offense, an offensive strategy used in basketball
 * Triangle Rewards, a loyalty program offered by Canadian Tire
 * The Triangle (newspaper), at Drexel University
 * The Triangle, Manchester, a building in England
 * 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