A triangle is an object, arrangement, or flat shape with three straight sides and three angles.
This design is in pastel colours with three rectangles and three triangles.
Its outline roughly forms an equilateral triangle.
...triangles of fried bread. [+ of]
...the great triangle of the Lancashire textile towns, stretching from Manchesterup as far as Burnley and across to Accrington.
2. countable noun [usually singular]
The triangle is a musical instrument that consists of a piece of metal shaped like a triangle. You play it by hitting it with a short metal bar.
3. countable noun [usually singular]
If you describe a group of three people as a triangle, you mean that they are all connected with each other in a particular situation, but often have different interests.
She plays a French woman in a love triangle with her two best friends.
...the classic triangle of husband, wife and mistress.
4. See also eternal triangle
triangle in British English
(ˈtraɪˌæŋɡəl)
noun
1. 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: 1⁄2base × height
2.
any object shaped like a triangle
3.
any situation involving three parties or points of view
See also eternal triangle
4. 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
Derived forms
triangled (ˈtriˌangled)
adjective
Word origin
C14: from Latin triangulum (noun), from triangulus (adjective), from tri- + angulus corner
triangle in American English
(ˈtraɪˌæŋgəl)
noun
1.
a geometric figure having three angles and three sides
2.
any three-sided or three-cornered figure, area, object, part, etc.
3.
a right-angled, flat, triangular instrument used in drawing geometric figures
4.
a situation involving three persons, esp. when one person is having love affairs with two others
5.
a musical percussion instrument consisting of a steel rod bent into a triangle with one angle open: it produces a high-pitched, tinkling sound when struck with a short steel rod
The love triangle was played out in sordid detail in the Indian press.
Times, Sunday Times (2017)
But throw a love triangle into the mix (or should that be love square?
The Sun (2016)
Love triangle How could it happen?
Times, Sunday Times (2016)
This means we can play with a triangle formation in attack.
Times, Sunday Times (2009)
As these price movements decrease the sides of the triangle converge.
Times, Sunday Times (2013)
It is thought the love triangle will play a big part in her dramatic exit.
The Sun (2011)
As a result it had to be set up in a large triangle shape rather than a rectangle.
Times, Sunday Times (2014)
Goose feathers have to be trimmed down to the exact millimetre and heels are filed into a sharp metal triangle.
Times, Sunday Times (2013)
But the pink inverted triangles on the sides of the table could also be seen as pieces of suspended cloth.
Times, Sunday Times (2013)
Hold a triangle shape and breathe.
The Sun (2014)
Sports news was played on triangles.
Times, Sunday Times (2008)
Everyone loves a good love triangle, but really.
Times, Sunday Times (2006)
On each of the other two sides sits a square with its side equal in length to the triangle's side.
Times, Sunday Times (2009)
A veritable love triangle, so it was.
Times, Sunday Times (2008)
Squeeze over the lemon wedges and sprinkle on some cayenne pepper, then serve with the vegetables and toast cut into triangles on the side.
The Sun (2014)
All the love triangles that went on').
Times, Sunday Times (2008)
Feet are together and knees apart, so you're making a triangle shape.
The Sun (2014)
Spain are the World Cup holders and always play in little triangles.
The Sun (2012)
Fold the pastry over and over, keeping a triangle shape, until you reach the other end.
Times, Sunday Times (2007)
A classic love triangle emerges.
The Sun (2013)
We live in a world where the symbols like the (press play ) triangle have become synonymous with time out.
The Sun (2014)
Word lists with
triangle
instrument
In other languages
triangle
British English: triangle /ˈtraɪˌæŋɡl/ NOUN
shape A triangle is a shape with three straight sides.
American English: triangle
Arabic: مُثَلَّث
Brazilian Portuguese: triângulo
Chinese: 三角
Croatian: trokut
Czech: trojúhelník
Danish: trekant
Dutch: driehoek
European Spanish: triángulo
Finnish: kolmio
French: triangle
German: Dreieck
Greek: τρίγωνο
Italian: triangolo
Japanese: 三角形
Korean: 삼각형
Norwegian: trekant
Polish: trójkąt
European Portuguese: triângulo
Romanian: triunghi
Russian: треугольник
Latin American Spanish: triángulo
Swedish: triangel
Thai: สามเหลี่ยม
Turkish: üçgen
Ukrainian: трикутник
Vietnamese: hình tam giác
British English: triangle /ˈtraɪˌæŋɡl/ NOUN
musical instrument A triangle is an instrument made of metal in the shape of a triangle that you hit with a stick to make music.
American English: triangle
Arabic: مُثَلَّث
Brazilian Portuguese: triângulo
Chinese: 三角铁
Croatian: triangl
Czech: triangl
Danish: triangel
Dutch: triangel
European Spanish: triángulo
Finnish: triangeli
French: triangleinstrument de musique
German: Triangel
Greek: τρίγωνο
Italian: triangolo
Japanese: トライアングル
Korean: 트라이앵글
Norwegian: triangel
Polish: trójkąt
European Portuguese: triângulo
Romanian: trianglu
Russian: треугольник
Latin American Spanish: triángulo
Swedish: triangel
Thai: กิ๋ง เครื่องดนตรีรูปสามเหลี่ยม
Turkish: üçgen
Ukrainian: трикутник
Vietnamese: kẻng ba gốc
All related terms of 'triangle'
love triangle
A love triangle is a relationship in which three people are each in love with at least one other person in the relationship.
acute triangle
a triangle that has three acute angles
golden triangle
any more or less triangular area or region noted for its success , prosperity , influence, etc
right triangle
A right triangle has one angle that is a right angle.
summer triangle
a group of three first-magnitude stars (Deneb, Vega , and Altair ) visible during the summer in the N skies
Bermuda Triangle
an area in the Atlantic Ocean bounded by Bermuda , Puerto Rico, and Florida where ships and aeroplanes are alleged to have disappeared mysteriously
circular triangle
a triangle in which each side is the arc of a circle
eternal triangle
You use the eternal triangle to refer to a relationship involving love and jealousy between three people.
Pascal's triangle
a triangle consisting of rows of numbers; the apex is 1 and each row starts and ends with 1, other numbers being obtained by adding together the two numbers on either side in the row above: used to calculate probabilities
spherical triangle
a closed geometric figure formed on the surface of a sphere that is bounded by arcs of three great circles
warning triangle
a triangle placed by a broken-down car to warn motorists to avoid it
triangle inequality
the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities
triangle of forces
a triangle whose sides represent the magnitudes and directions of three forces whose resultant is zero and which are therefore in equilibrium
right-angled triangle
a triangle one angle of which is a right angle
the Golden Triangle
an opium-producing area of SE Asia, comprising parts of Myanmar , Laos , and Thailand