What is triangle?

  • (noun): A three-sided polygon.
    Synonyms: trigon, trilateral
    See also — Additional definitions below


A triangle is one of the basic shapes of geometry: a polygon with three corners or vertices and three sides or edges which are line segments. A triangle with vertices A, B, and C is denoted .

Read more about Triangle.

Some articles on triangle:

Spring Triangle
... The Spring Triangle is an astronomical asterism involving an imaginary triangle drawn upon the celestial sphere, with its defining vertices at Arcturus, Spica, and alternately Denebola or Regulus ... This triangle connects the constellations of Bo├Âtes, Virgo, and Leo ...
Triangle, Virginia - Government
... Triangle is represented in the Virginia House of Delegates by L ... Scott Lingamfelter ...
Concurrent Lines
... In a triangle, four basic types of sets of concurrent lines are altitudes, angle bisectors, medians, and perpendicular bisectors A triangle's ... Angle bisectors are rays running from each vertex of the triangle and bisecting the associated angle ... Medians connect each vertex of a triangle to the midpoint of the opposite side ...
Ghost Ship - Film
2001 The Triangle has the tagline "60 years ago, the Queen of Scots vanished in the Bermuda Triangle ... group of people exploring the SS Corona Queen, which has emerged from the Bermuda Triangle after 30 years. 2009 Triangle is psychological horror film about a group of friends on a yachting trip who discover the derelict ocean liner Aeolus ...
Afar Triangle
... The Afar Triangle (also called the Afar Depression or the Danakil Depression) is a geological depression that is caused by the Afar Triple Junction which is part of the Great Rift Valley ... The Afar Triangle includes the Danakil Depression and the lowest point in Africa, Lake Asal (155 metres / 509 feet below sea level) ...

More definitions of "triangle":

  • (noun): Something approximating the shape of a triangle.
    Example: "The coastline of Chile and Argentina and Brazil forms two legs of a triangle"
  • (noun): Any of various triangular drafting instruments used to draw straight lines at specified angles.
  • (noun): A percussion instrument consisting of a metal bar bent in the shape of an open triangle.