Calculate The Mean Measure Of The Exterior Angles Of A Triangle. In this video we are given a diagram with a triangle the exterior angle and two opposite interior angles are marked with algebraic expressions. There are two rules for solving for an Exterior Angle of a Triangle.
We know that the three interior angles of any triangle always add up to 180 degrees. This question is answered by the picture below. An exterior angle of a triangle is equal to the sum of the two opposite interior angles.
If the measure of the exterior angle is 3x - 10 degrees and the measure of the two remote interior angles are 25 degrees and x 15 degrees find x.
Y 92 180 interior angle adjacent exterior angle. In this video we are given a diagram with a triangle the exterior angle and two opposite interior angles are marked with algebraic expressions. What is the measure of the exterior angle of a triangle. From the theorem about sum of angles in a triangle we calculate that γ 180- α - β 180- 30 - 5106 9894.