adjective

triangular

try-ANG-gyuh-ler/traɪˈæŋɡjələr/

Having three connected corners.

The triangular wooden tile has three straight sides and three corners.

A single flat triangular wooden tile, viewed straight from above so its three straight sides and three sharp corners are immediately visible.

Etymology

triLatinthree

+angulLatincorner, angle

+arLatinpertaining to

The literal image is “having three corners.” In a triangle, those corners are the angles made by its sides, so the word describes both its three angles and its three sides.

In context

Cooper Hewitt2:32

triangular trade which is a very specific plot supply chain which is an economic and historical term indicating trade among three port regions

Fashion, Culture, Futures: Sustainable Fashion Practice From Africa to North America

More examples

She cuts the sandwich into two triangular halves.
The garden fills a triangular space between two paths.
A triangular relationship develops between the three main characters.

Forms

triangular

triangle noun — A flat shape with three straight sides.

Similar words

three-sided: Describes the number of sides rather than emphasizing corners.
three-cornered: Emphasizes three corners and can also describe three-way contests.