SOLUTION: an exterio angle at the base of an isosceles triangle measures 136.find the measure of the vertex angle

Question 930014: an exterio angle at the base of an isosceles triangle measures 136.find the measure of the vertex angle

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
an exterio angle at the base of an isosceles triangle measures 136.find the measure of the vertex angle

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The adjacent base angle is 180-138 = 42 degrees
The other base angle is also 42 degrees.
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Equation to find vertex angle::
x = 180-2*42
x = 180-84
x = 96 degrees
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Cheers,
Stan H.
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