How Do You Find The Measure Of An Exterior Angle Of A Triangle. This means that the exterior angle must be adjacent to an interior angle right next to it - they must share a side and the interior and exterior angles form a straight line 180 degrees. 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.
The exterior angles taken. 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. If you are given the adjacent angle you subtract the angle from 180 degrees to solve for the exterior angle of a triangle.
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Therefore the sum of the interior angles is always 180 2 Exterior Angles An exterior angle of the triangle is the angle between one side of a triangle and the extension of an adjacent side. If you extend one of the sides of the triangle it will form an exterior angle. For example in triangle ABC above. Exterior angles of a triangle - Triangle exterior angle theorem An exterior angle of a triangle is equal to the sum of the opposite interior angles.