Question

Define triangle
long answer required ____​

Answer 1

Answer:

a closed plane figure having three sides and three angles. a flat triangular piece, usually of plastic, with straight edges, used in connection with a T square for drawing perpendicular lines, geometric figures, etc. any three-cornered or three-sided figure, object, or piece: a triangle of land.

Step-by-step explanation:

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Answer 2

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A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted \triangle ABC. In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane.

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