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1a flat shape with three straight sides and three angles; a thing in the shape of a triangle a right triangle Cut the dough into triangles.
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2a simple musical instrument that consists of a long piece of metal bent into the shape of a triangle, which you hit with another piece of metal
- 3a situation involving three people in a complicated relationship a love triangle see eternal triangle
- 4an instrument for drawing straight lines and angles, made from a flat piece of plastic or metal in the shape of a triangle with one angle of 90°
Check pronunciation: triangle