What is the measure of a base angle of an isosceles triangle if the vertex angle measures 38 degrees and the two congruent sides each measure 21 units?
Added by Eugenia V.
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In an isosceles triangle, two sides are congruent, and the angles opposite these sides are also congruent. The given triangle has two congruent sides each measuring 21 units and a vertex angle measuring 38 degrees. Show more…
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