SOLUTION: A base angle of an isosceles triangle is 9 degrees more than the vertex angle. Find a base angle.

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Question 1108739: A base angle of an isosceles triangle is 9 degrees more than the vertex angle. Find a base angle.
Found 2 solutions by josgarithmetic, TeachMath:
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
2%28v%2B9%29%2Bv=180

2v%2B18%2Bv=180
3v=180-18
v=60-6
v=54-------------vertex angle

Base angle each 9 degrees MORE than vertex.
54%2B9=highlight_green%2863%29

Answer by TeachMath(96) About Me  (Show Source):
You can put this solution on YOUR website!
base angle: 63 degrees
48 is wrong!!