what is the formula of triangle sum property.
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the formula is THE SUM OF ALL ANGLES OF A TRIANGLE IS EQUAL TO 180°
avinashmandal23:
Thus, the sum of interior angles of a triangle is 180°. Exterior Angle Property of a Triangle: Theorem 2: If any side of a triangle is extended, then the exterior angle so formed is sum of the two opposite interior angles of the triangle
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