SOLUTION: what is the measure of the vertex angle of an isosceles triangle if one isosceles triangle if one of its base angles measures 70 degrees and its congruent sides each measure 15 cm?
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Question 548354: what is the measure of the vertex angle of an isosceles triangle if one isosceles triangle if one of its base angles measures 70 degrees and its congruent sides each measure 15 cm? Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! what is the measure of the vertex angle of an isosceles triangle if one isosceles triangle if one of its base angles measures 70 degrees and its congruent sides each measure 15 cm?
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The base angles are equal, 70 degs each.
That makes the vertex angle 40 degs (180 - 2*70).
The side lengths are irrelevant.
