SOLUTION: What is the measure of a base angle of an isosceles triangle if the vertex angle measures 38° and each of the two congruent sides measures 21 units?

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Question 876461: What is the measure of a base angle of an isosceles triangle if the vertex angle measures 38° and each of the two congruent sides measures 21 units?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Each base angle is (180-38)/2 = 142/2 = 71 degrees

Note: the info "each of the two congruent sides measures 21 units" is not needed in this case.