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

Algebra ->  Angles -> SOLUTION: an exterio angle at the base of an isosceles triangle measures 136.find the measure of the vertex angle       Log On


   



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) About Me  (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

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