Question

The isosceles trapezoid is part of an isosceles triangle with 32 Degree vertex angle. What is the measure of an acute base angle of the trapezoid? a)64 b)58 c)74 d) 32

Answer 1

A triangle's interior angles add up to 180. In addition, an isosceles triangle has congruent base angles. Therefore, subtract the vertex angle from 180 and divide that by 2 in order to get the measure of a base angle.