what is triangle
properties of triangle
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1. 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°
2. Properties of a triangle
A triangle has three sides, three angles, and three vertices.
The sum of all internal angles of a triangle is always equal to 1800. This is called the angle sum property of a triangle.
The sum of the length of any two sides of a triangle is greater than the length of the third side.
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