
Definition of Triangle
1. Noun. A threesided polygon.
Generic synonyms: Polygon, Polygonal Shape
Specialized synonyms: Acute Triangle, Acuteangled Triangle, Equiangular Triangle, Equilateral Triangle, Isosceles Triangle, Oblique Triangle, Obtuse Triangle, Obtuseangled Triangle, Right Triangle, Rightangled Triangle, Scalene Triangle, Cuneus, Wedge, Wedge Shape
Derivative terms: Triangular, Triangular, Triangulate, Triangulate
2. Noun. Something approximating the shape of a triangle. "The coastline of Chile and Argentina and Brazil forms two legs of a triangle"
3. Noun. A small northern constellation near Perseus between Andromeda and Aries.
4. Noun. Any of various triangular drafting instruments used to draw straight lines at specified angles.
5. Noun. A percussion instrument consisting of a metal bar bent in the shape of an open triangle.
Definition of Triangle
1. n. A figure bounded by three lines, and containing three angles.
Definition of Triangle
1. Proper noun. The area comprising the cities of Raleigh, Durham and Chapel Hill in North Carolina. Used with "the" except when attributive. ¹
2. Noun. (geometry) A polygon with three sides and three angles. ¹
3. Noun. (music) A percussion instrument made by forming a metal rod into a triangular shape which is open at one angle. It is suspended from a string and hit with a metal bar to make a resonant sound. ¹
4. Noun. (context: cue sports) A triangular shaped piece of equipment used for gathering the balls into the formation required by the game being played. ¹
5. Noun. A love triangle. ¹
6. Noun. (context: systemics) The structure of systems composed with three interrelated objects. ¹
¹ Source: wiktionary.com
Definition of Triangle
1. a polygon having three sides [n S]
Medical Definition of Triangle
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Triangle Pictures
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Lexicographical Neighbors of Triangle
Literary usage of Triangle
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Treatise on Conic Sections: Containing an Account of Some of the Most by George Salmon (1879)
"Let the point in which meet the lines joining the corresponding vertices of any
triangle and of its polar triangle with respect to a conic be called the ..."
2. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, Literature and (1911)
"In a plane triangle any one of the angular points can be regarded as the ...
The three sides and angles constitute the six elements of a triangle; ..."
3. South Eastern Reporter by West Virginia Supreme Court of Appeals, West Publishing Company, South Carolina Supreme Court (1913)
"P. Clarence Barnes was the owner of an adjoining tract, which terminated in a
sharp triangle having its apex at the corner common to the two Bent tracts. ..."
4. Elements of Geometry: Containing the First Six Books of Euclid, with a by John Playfair, William Wallace (1836)
"5 the triangle FGL, sof is the triangle BEC to the triangle GLH. Again, because
the triangle EBC is similar to the triangle LGH, EBC has to LGH the ..."
5. Anatomy: Descriptive and Surgical by Henry Gray, Thomas Pickering Pick (1897)
"SURGICAL ANATOMY OF THE triangle* OF THE NECK. The student having considered the
relative anatomy of the large arteries of the neck and their branches, ..."
6. Catalogue of Scientific Papers, 18001900: Subject Indexby Royal Society (Great Britain), Herbert McLeod by Royal Society (Great Britain), Herbert McLeod (1908)
"of triangle formed by joining feet of bisectors of angles. Dostor, G. Arch. Mth.
Ps. 64 ... circles of plane triangle generalised, inversion of system. ..."