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In this triangle, what is the measure of the exterior angle?
1 Answer
- 6 years ago
Angles in a triangle = 180, and since the two sides are the same (I.e. It's an isosceles triangle) then the two base angles are going to be identical. With that said; 180-52=128
So the sum of the two base angles is 128.
128/2=64
So each base angle is 64 degrees.
Angles on a straight line also = 180 degrees and you now know one angle is 64 degrees on that line, so;
180-64=116
The exterior angle is 116 degrees