triangle
UK: ˈtraɪæŋɡl̩ | US: ˈtraɪæŋɡl̩
n. a plane figure with three straight sides and three angles
n. any three-cornered or three-sided figure or object
n. a musical percussion instrument of the idiophone class, consisting of a steel rod bent into a triangle
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triangle = tri<three> + angle<corner>
- tri (from Latin tres, Greek treis): Meaning "three."
- angle (from Latin angulus): Meaning "corner" or "bend."
Etymology Origin:
The word triangle originates from the Latin triangulum, combining tri- (three) and angulus (angle). This reflects the geometric essence of the shape—a three-cornered figure. The term entered Middle English via Old French triangle, retaining its logical structure. The morphemes tri- and angle remain transparent in modern usage, making the word easily analyzable for learners.
The children drew a red triangle on their art project.
A triangle has three sides and three vertices.
She played the triangle in the school orchestra.
The architect used a triangle to ensure precise angles.
The symbol formed a perfect equilateral triangle.