Question

Two parallel lines are cut by a transversal .The measure of two interior angles on the same side of the transversal are represented by x and 4x .Find the measure of the smaller angle.

Answer 1

x+4x= 180 (interior angles)
5x=180
x=36 (smaller angle)
4x=144(bigger angle)

Answer 2

Since the angles are on the same sides of the transversal sum fo both the angles in 180

4x +x=180
5x=180
x=180/5
x=36