triangle

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triangle
top: right triangle
bottom: equilateral triangle

tri·an·gle

 (trī′ăng′gəl)
n.
1.
a. The plane figure formed by connecting three points not in a straight line by straight line segments; a three-sided polygon.
b. Something shaped like such a figure: a triangle of land.
2. Any of various flat, three-sided drawing and drafting guides, used especially to draw straight lines at specific angles.
3. Music A percussion instrument consisting of a piece of metal in the shape of a triangle open at one angle.
4. A relationship involving three people, especially a ménage à trois.

[Middle English, from Old French, from Latin triangulum, from neuter of triangulus, three-angled : tri-, tri- + angulus, angle.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

triangle

(ˈtraɪˌæŋɡəl)
n
1. (Mathematics) geometry a three-sided polygon that can be classified by angle, as in an acute triangle, or by side, as in an equilateral triangle. Sum of interior angles: 180°; area: base × height
2. any object shaped like a triangle
3. any situation involving three parties or points of view. See also eternal triangle
4. (Instruments) music a percussion instrument consisting of a sonorous metal bar bent into a triangular shape, beaten with a metal stick
5. a group of three
[C14: from Latin triangulum (noun), from triangulus (adjective), from tri- + angulus corner]
ˈtriˌangled adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

tri•an•gle

art at tribrach
(ˈtraɪˌæŋ gəl)

n.
1. a closed plane figure having three sides and three angles.
2. a flat triangular piece with straight edges, used in connection with a T square for drawing perpendicular lines, geometric figures, etc.
3. any three-cornered or three-sided figure, object, or piece: a triangle of land.
4. a musical percussion instrument that consists of a steel triangle, open at one corner, that is struck with a steel rod.
5. a group of three; triad.
6. a situation involving three persons, esp. one in which two of them are in love with the third.
[1350–1400; Middle English < Latin triangulum, n. use of neuter of triangulus three-cornered. See tri-, angle1]
tri′an`gled, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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triangle
The area (A) of a triangle can be calculated using the following formula: A = 1/2 bh.

tri·an·gle

(trī′ăng′gəl)
A closed geometric figure consisting of three sides.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Triangle

 a set of three.
Example: long wavering triangle of waterfowl, 1895.
Dictionary of Collective Nouns and Group Terms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.triangle - a three-sided polygontriangle - a three-sided polygon    
polygon, polygonal shape - a closed plane figure bounded by straight sides
acute triangle, acute-angled triangle - a triangle whose interior angles are all acute
equiangular triangle, equilateral triangle - a three-sided regular polygon
isosceles triangle - a triangle with two equal sides
oblique triangle - a triangle that contains no right angle
obtuse triangle, obtuse-angled triangle - a triangle that contains an obtuse interior angle
right triangle, right-angled triangle - a triangle with one right angle
scalene triangle - a triangle with no two sides of equal length
cuneus, wedge, wedge shape - any shape that is triangular in cross section
2.triangle - something approximating the shape of a triangletriangle - something approximating the shape of a triangle; "the coastline of Chile and Argentina and Brazil forms two legs of a triangle"
shape, form - the spatial arrangement of something as distinct from its substance; "geometry is the mathematical science of shape"
3.triangle - a small northern constellation near Perseus between Andromeda and AriesTriangle - a small northern constellation near Perseus between Andromeda and Aries
4.triangle - any of various triangular drafting instruments used to draw straight lines at specified anglestriangle - any of various triangular drafting instruments used to draw straight lines at specified angles
drafting instrument - an instrument used by a draftsman in making drawings
5.triangle - a percussion instrument consisting of a metal bar bent in the shape of an open triangletriangle - a percussion instrument consisting of a metal bar bent in the shape of an open triangle
percussion instrument, percussive instrument - a musical instrument in which the sound is produced by one object striking another
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
مُثَلَّثمُثَلَّث موسيقي
triangltrojúhelník
trekanttriangel
triangulo
kolmiotriangeli
trokuttriangl
háromszögtriangulum
òríhornòríhyrningurþríhornþríhyrningur
トライアングル三角形
삼각형트라이앵글
triangulum
trikampis
trijstūris
triangel
trikotniktriangel
triangeltrehörningtrekant
กิ๋ง เครื่องดนตรีรูปสามเหลี่ยมสามเหลี่ยม
üçgentriangelüç köşe
hình tam giáckẻng ba gốc

triangle

[ˈtraɪæŋgl] N (also Mus) → triángulo m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

triangle

[ˈtraɪæŋgəl] n
(MATHEMATICS)triangle m
(MUSIC)triangle m
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

triangle

nDreieck nt; (= set square)(Zeichen)dreieck nt; (Mus) → Triangel m; (fig: = relationship) → Dreiecksbeziehung f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

triangle

[ˈtraɪˌæŋgl] n (Math, Mus) → triangolo
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

triangle

(ˈtraiӕŋgl) noun
1. a two-dimensional figure with three sides and three angles.
2. a musical instrument consisting of a triangular metal bar that is struck with a small hammer.
triˈangular (-gju-) adjective
in the shape of a triangle. a triangular road-sign; It is triangular in shape.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.

triangle

مُثَلَّث triangl, trojúhelník trekant, triangel Dreieck, Triangel τρίγωνο triángulo kolmio, triangeli triangle triangl, trokut triangolo トライアングル, 三角形 삼각형, 트라이앵글 driehoek, triangel trekant, triangel trójkąt triângulo треугольник triangel กิ๋ง เครื่องดนตรีรูปสามเหลี่ยม, สามเหลี่ยม üçgen hình tam giác, kẻng ba gốc 三角, 三角铁
Multilingual Translator © HarperCollins Publishers 2009

tri·an·gle

n. triángulo.
English-Spanish Medical Dictionary © Farlex 2012
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