One angle of a triangle measures 126°. the other two angles are congruent. enter and solve an equation to find the measure x of the congruent angles. an equation is (blank)= 180 the congruent angles each measure (blank)° fill in the blanks.

First we name the angles if the triangle a, b, c respectively. So the first answer is
a + b + c = 180
since we know 1 angle of the triangle (we can call it a) , we can subtract 'a' which is 126 from 180 degrees, which will become the sum of the congruent angles.