triangle
Noun

A threesided polygon (synset 113901977)
hypernym: polygon, polygonal shape  a closed plane figure bounded by straight sideshyponym:
 acute triangle, acuteangled triangle  a triangle whose interior angles are all acute
 equiangular triangle, equilateral triangle  a threesided regular polygon
 isosceles triangle  a triangle with two equal sides
 oblique triangle  a triangle that contains no right angle
 obtuse triangle, obtuseangled triangle  a triangle that contains an obtuse interior angle
 right triangle, rightangled 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
synonym: trigon, trilateral  Something approximating the shape of a triangle (synset 113902291)

A small northern constellation near Perseus between Andromeda and Aries (synset 109484854)
instance hypernym: constellation  a configuration of stars as seen from the earthsynonym: triangulum

Any of various triangular drafting instruments used to draw straight lines at specified angles (synset 104488251)
hypernym: drafting instrument  an instrument used by a draftsman in making drawings

A percussion instrument consisting of a metal bar bent in the shape of an open triangle (synset 104488109)
hypernym: percussion instrument, percussive instrument  a musical instrument in which the sound is produced by one object striking another
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