## Meanings
1. A flat shape with three straight sides and three angles.
2. A situation involving three people, especially a romantic one.
3. A percussion instrument made of a metal bar bent into a triangle shape.

## Examples
- The teacher asked us to measure the angles of the triangle.
- The novel centres on a love triangle between three old friends.
- She played the triangle in the school orchestra.

## Derived Forms
- anti-triangle
- triangle-free
- triangler
- trianglist
- triangular
- triangulate
- triangulation

## Roots and Affixes
- Root: triangle
- Root: triangulum
- Affix: tri- - three

## Etymology
PIE word *tréyes From Middle English triangle, from Old French triangle, from Latin triangulum, noun use of adjective triangulus (“three-cornered, having three angles”), from trēs (“three”) + angulus (“corner, angle”), equivalent to tri- + -angle.

## AI Etymology
Triangle is from Middle English triangle, from Old French triangle, from Latin triangulum, noun use of adjective triangulus (“three-cornered, having three angles”), from trēs (“three”) + angulus (“corner, angle”), equivalent to tri- + -angle. The historical line also includes Middle English triangle, Old French triangle, Latin triangulum. In present-day use, it can mean a flat shape with three straight sides and three angles, or a situation involving three people, especially a romantic one. Derived formations include anti-triangle, triangle-free, triangler, trianglist, triangular, triangulate, triangulation.

## Topics
- Mathematics & Measurement

markdown

triangle

Meanings

Thesaurus

Common collocations

Etymology

Topics

External links

Keyboard Shortcuts

General

Send feedback