meaning of triangles
1. A figure bounded by three lines, and containing three angles.
2. An instrument of percussion, usually made of a rod of steel, bent into the form of a triangle, open at one angle, and sounded by being struck with a small metallic rod.
3. A draughtsmans square in the form of a right-angled triangle.
4. A kind of frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment, -- now disused.
5. A small constellation situated between Aries and Andromeda.
6. A small constellation near the South Pole, containing three bright stars.
7. a percussion instrument consisting of a metal bar bent in the shape of an open triangle
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