I'm not sure what you mean but the angle sum (what all the interior angles add up to) is 180 degrees.
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Yes they do add up to 180.
Triangles are joined together by 3 line segments Triangles have 3 interior angles that add up to 180 degrees Triangles have 3 exterior angles that add up to 360 degrees Triangles have no diagonals Triangles will tessellate Triangles can be scalene, obtuse, right angle, isosceles or equilateral Triangles have a perimeter which is the sum of their 3 sides
180 or pi...
180 degrees
Interior angles of all triangles add up to 180 degrees.