Calculate The Mean Measure Of The Exterior Angles Of A Triangle. The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles The measure of an exterior angle of a triangle is greater than either of the two remote interior angles. Set up an equation with the sum of the three angles equating it with 180 and solve for x.
Rule 4 Remote Extior Angles -- This Theorem states that the measure of a an exterior angle A equals the sum of the remote interior angles measurements. The sum of the interior angles is always 180 implies x y z 180. In this video we are given a diagram with a triangle the exterior angle and two opposite interior angles are marked with algebraic expressions.
The sum of the interior angles is always 180 implies x y z 180.
The second rule states that the Exterior Angle of a Triangle is supplementary to the adjacent angle. The sum of the interior angles is always 180 implies x y z 180. An interior angle is an angle inside the shape. More Whats the difference between interior and exterior angles of a triangle.