180 degrees sum of angles in a triangle

- The sum of all angles in a triangle is 180 degrees
- Prove that the sum of angles in a triangle is 180 degrees
- The sum of the angles in a triangle is always 180 degrees
- The sum of the interior angles in a triangle is 180 degrees
- Sum of the angles in a triangle add up to 180 degrees
- The sum of three interior angles in a triangle is always 180 degrees
- Prove that sum of the interior angles in a triangle is 180 degrees
- The sum of the angles in a triangle is equal to 180 degrees
- The sum of all interior angles in a triangle always equals 180 degrees