SOLUTION: Each base angle of an isosceles triangle measures 70 degrees. Find the vertex angle.

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Question 527065: Each base angle of an isosceles triangle measures 70 degrees. Find the vertex angle.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = vertex angle

Since all angles in a triangle add to 180 degrees, we know that


70+70+x = 180

140+x = 180

x = 180-140

x = 40

So the vertex angle is 40 degrees.


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