1. A three-sided polygon
   - trigon, trilateral 
2. Something approximating the shape of a triangle
   "the coastline of Chile and Argentina and Brazil forms two legs of a triangle" 
3. Any of various triangular drafting instruments used to draw straight lines at specified angles 
4. A percussion instrument consisting of a metal bar bent in the shape of an open triangle

1. A small northern constellation near Perseus between Andromeda and Aries
   - Triangulum

Derived forms: triangles

See also: triangular, triangulate

Type of: constellation, drafting instrument, form, percussion instrument, percussive instrument, polygon, polygonal shape, shape

Encyclopedia: Triangle, Newfoundland and Labrador Triangle, New York Triangle Triangle, Zimbabwe Triangle, Virginia Triangle, VA

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