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The sum of the 3 interior angles of any triangle add up to 180 degrees
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-- A scalene triangle has three interior angles and three exterior angles. -- The sum of the interior angles is 180 degrees, and no two of them are equal. -- The sum of the exterior angles is also 180 degrees, and no two of them are equal. -- The sum of each interior angle and its adjacent exterior angle is 180 degrees.
The sum of the three angles of any triangle is 180o.
The three angle sum of ANY triangle is 180 degrees.
180 degrees
The three interior angles of any triangle always add up to 180 degrees.