One interior angle of a triangle is 34°, and the other two angles are congruent. Choose the equation that could be used to determine the degree measure of one of the congruent angles.
a x − 34 = 90
b x + 34 = 180
c 2x − 34 = 90
d 2x + 34 = 180
The correct equation that could be used to determine the degree measure of one of the congruent angles is:
c) 2x - 34 = 90