SOLUTION: One of the base angles of an isosceles triangle has a measure of 65. What is the measure of the vertex angle?

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Question 162711: One of the base angles of an isosceles triangle has a measure of 65. What is the measure of the vertex angle?
Answer by Alan3354(21583) About Me  (Show Source):
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One of the base angles of an isosceles triangle has a measure of 65. What is the measure of the vertex angle?
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The 2 base angles are equal, so the other is also 65º. They add to 130º. The sum of the angles of all triangles is 180, so the vertex angle is 50º.