Question

g.) Find the angles a and b.​

Answer 1

Step-by-step explanation:

a+140= 180 (Linear Pair)

a=180-140

a=40°

Angle "a" and angle "b" are alternate interior angles

So angle a = angle b

b= 40°

Answer 2

A line is always obtain 180°

Let kl // Lm

140°+x=180°

x=189°-140°

x=40°

angle a is also 40 ( linear pair)

angle B is also 40 (Alt.angle)