Angles In A Triangle Worksheet Answers. This worksheet shows students that the summation of the interior angles of triangles equals 180 degrees. The sum of the lengths of the sides of a triangle is always greater than the length of the third side.
It also helps them build equations, because the interior angles. The angles of a triangle always add up to 180. The sum of the lengths of the sides of a triangle is always greater than the length of the third side.