Question 477963
What is the measure of each base angle of an isosceles triangle if it'd vertex angle measure 26 degrees and it's 2 congruent sides measure 13 units?
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The sum of the base angles must be 180-26 = 154 degrees
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The 2 base angles are equal so each is (1/2)(154) = 77 degrees.
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Cheers,
Stan H.
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