what is a triangle , how many sides it have
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Properties of a Triangle
A triangle has three sides, three vertices, and three angles.
The sum of the three interior angles of a triangle is always 180°.
The sum of the length of two sides of a triangle is always greater than the length of the third side.
A triangle with vertices P, Q, and R is denoted as △PQR.
Step-by-step explanation:
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