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Triangle
basic three-sided shape of geometry / From Wikipedia, the free encyclopedia
For other uses, see Triangle (disambiguation).
A triangle is a shape, or a part of two dimensional space. It has three straight sides and three vertices. The three angles of a triangle always add up to 180° (180 degrees). It is the polygon with the least possible number of sides. A triangle with vertices A, B, C is written as .[1][2] The study of geometry related to triangles is called trigonometry. Modern computers usually use triangles to make more complex graphic images or shapes.
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