The sum of the angles inside a triangle is 180 degrees.
The 3 inside angles of any triangle add up to 180 degrees.
The sum of the angles in any triangle is 180 degrees.
The 3 inside angles of any triangle add up to 180 degrees
The sum of the three angles of any triangle is 180o.
The sum of the angles inside a triangle is 180 degrees.
The 3 inside angles of any triangle add up to 180 degrees.
The sum of the angles in any triangle is 180 degrees.
The 3 inside angles of any triangle add up to 180 degrees
The sum of the interior angles of ANY triangle is 180 degrees.
The sum of the three angles of any triangle is 180o.
The sum of the angles in ANY triangle (equiangular or not) is 180 degrees.
The 3 inside angles of a triangle add up to 180 degrees
The sum of the 3 angles in any triangle including a scalene triangle add up to 180 degrees.
The sum of the 3 angles in any triangle add up to 180 degrees.
The sum of the interior angles of any triangle, including and equilateral triangle, is 180 degrees.
The sum of the internal angles of any triangle is 180 degrees. Any rectangle has four 90 degree internal angles, totalling 360 degrees.