Question

I two interror angles on the same side of a transversal intersecting
two parallel Lines are in the ratio 4:5 then find the smaller of
the two angles​

Answer 1

Let the angles be 4x and 5x

4x + 5x = 180°( sum of co interior angles is 180°)

9x = 180°

x = 180/9

x = 20°

Therefore the the small angle is= 4 x 20 = 80°