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.]

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

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.
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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.

Triangle

 a set of three.
Example: long wavering triangle of waterfowl, 1895.
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
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

triangle

[ˈtraɪæŋgəl] n
(MATHEMATICS)triangle m
(MUSIC)triangle m

triangle

nDreieck nt; (= set square)(Zeichen)dreieck nt; (Mus) → Triangel m; (fig: = relationship) → Dreiecksbeziehung f

triangle

[ˈtraɪˌæŋgl] n (Math, Mus) → triangolo

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.

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

tri·an·gle

n. triángulo.
References in classic literature ?
Take for example an equilateral Triangle -- who represents with us a Tradesman of the respectable class.
If our friend comes closer to us we see his line becomes larger; if he leaves us it becomes smaller: but still he looks like a straight line; be he a Triangle, Square, Pentagon, Hexagon, Circle, what you will -- a straight Line he looks and nothing else.
From ship to shore, the side of the triangle along which the Italians had to escape, was a distance equal to that from the Solano Wharf to the shore, the side of the triangle along which we had to travel to get to the shore before the Italians.
We found that an imaginary line, drawn from the end of the wharf to a windmill farther along the shore, cut precisely in half the line of the triangle along which the Italians must escape to reach the land.
The city forms an immense triangle marked out upon a vast plain of white sand, its acute angle directed toward the north and piercing a corner of the desert.
William rose, casting a tranquil glance over the enthusiastic crowd, and his keen eyes rested by turns on the three extremities of a triangle formed opposite to him by three persons of very different interests and feelings.
Black on thy back is thy triangle and symbol; and I know also what is in thy soul.
At first I had not connected her act with anything in particular, but after we learned to converse and she had explained a little of her religious superstitions, I realized that she was making the sign of the triangle as a Roman Catholic makes the sign of the cross.
As the geometrician, when he is asked whether a certain triangle is capable being inscribed in a certain circle
It has been ready a long while," answered the marker, who had already set the balls in a triangle, and was knocking the red one about for his own diversion.
It was already dark on the third day after the scene described in the previous chapter when we camped in some huts at the foot of the "Three Witches," as the triangle of mountains is called to which Solomon's Great Road runs.
Among others, to show the whimsicality of their deadly seriousness, may be mentioned the following: The Bleeding Hearts, Sons of the Morning, the Morning Stars, The Flamingoes, The Triple Triangles, The Three Bars, The Rubonics, The Vindicators, The Comanches, and the Erebusites.