C. Alternate interior angles are formed by a transverse line intersecting two parallel lines . They are located between the two parallel lines but on opposite sides of the transverse line
We are given with arc AC = 130 The measure of the arc on the other side of the circle is 360 - 130 = 230 Therefore, according to the theorem on circles, the measure of angle ABC is (1/2) ( 230 - 130) = 50
