The sum of the three angles of any triangle is 180o.
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The three angle sum of ANY triangle is 180 degrees.
The sum of all angles in any triangle equals 180 degrees.
In a triangle, the sum of the angles is always 180 degrees. This is known as the angle sum property of triangles. Additionally, the largest angle in a triangle is always opposite the longest side, and the smallest angle is opposite the shortest side.
How: The sum of the 3 interior angles of any triangle add up to 180 degrees
Any exterior angle of a triangle always equals the sum of the two interior opposite angles.