triangle
See also: Triangle
English
A regular triangle, the geometric shape.
A triangle, the musical instrument.
Etymology
From Old French triangle, from Latin triangulum, noun use of adjective triangulus (“three-cornered, having three angles”), from trēs (“three”) + angulus (“corner, angle”).
Pronunciation
Noun
triangle (plural triangles)
- (geometry) A polygon with three sides and three angles.
- (US, Canada) A set square.
- (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.
- (cue sports) A triangular piece of equipment used for gathering the balls into the formation required by the game being played.
- A love triangle.
- 2009, Neil McDonald, Quadrant, November 2009, No. 461 (Volume LIII, Number 11), Quadrant Magazine Limited, page 104:
- One of the writers' most pleasing inventions was to treat the triangle love story as comedy.
- 2009, Neil McDonald, Quadrant, November 2009, No. 461 (Volume LIII, Number 11), Quadrant Magazine Limited, page 104:
- (systemics) The structure of systems composed with three interrelated objects.
- A draughtsman's square in the form of a right-angled triangle.
- (historical) A frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment.
Synonyms
- (polygon): threeside, trigon (rare)
- (love triangle): love triangle, menage à trois
- See also Thesaurus:triangle
Derived terms
- acute-angled triangle
- acute triangle
- anal triangle
- Bermuda Triangle
- black triangle
- circular triangle
- cyclic triangle
- Devil's Triangle
- equilateral triangle
- eternal triangle
- femoral triangle
- golden triangle
- Golden Triangle
- isosceles triangle
- love triangle
- North Atlantic Triangle
- obtuse-angled triangle
- obtuse triangle
- Pascal's triangle
- Polynesian Triangle
- pubic triangle
- Reuleaux triangle
- right-angled triangle
- right triangle
- scalene triangle
- set triangle
- Sierpinski triangle
- spherical triangle
- star-triangle relation
- Sunni Triangle
- triangle choke
- triangle inequality
- triangle offense
- triangle piercing
- triangle test
- triangle wave
- trianglist
- triangular
- triangular distribution
- triangular function
- triangular prism
- triangulate
- triangulation
Translations
polygon
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percussion instrument
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love triangle — see love triangle
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.
Translations to be checked
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Further reading
Catalan
French
Etymology
Borrowed from Latin triangulum. Synchronically analysable as tri- + angle.
Pronunciation
- IPA(key): /tʁi.jɑ̃ɡl/
audio (file)
Noun
triangle m (plural triangles)
- (geometry) triangle (polygon)
- triangle équilatéral
- equilateral triangle
- triangle isocèle
- isosceles triangle
- (music) triangle (percussion instrument)
Derived terms
Further reading
- “triangle” in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).
Anagrams
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