A triangle is a polygon with three corners and three sides, one of the basic shapes in geometry. The corners, also called vertices, are zero-dimensional points while the sides connecting them, also called edges, are one-dimensional line segments.... Wikipedia
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This free triangle calculator computes the edges, angles, area, height, perimeter, median, as well as other values and a diagram of the resulting triangle.
Apr 17, 2024 · a closed plane figure having three sides and three angles. a flat triangular piece, usually of plastic, with straight edges ...