The Exterior Angle Theorem states that - The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles of the triangle.
The remote interior angles are the interior angles of a triangle that are not adjacent or non - adjacent to a given angle.
So, the correct answer will be - C. Exterior Angle Theorem
C. Exterior Angle Theorem. You can easily conclude that based on the wording of the theorem when it states "exterior angle," which is the main topic of the theorem.
