Question

Q8) Line m || line n and line l is their transversal, ∠a=40°, find ∠c =? *
​

Answer 1

If angle a = 40°

Than Angle b is also 40°

So, angle c = 180° - 40°

angle c = 140°

Answer 2

Answer:

Here, ∠a = ∠b .... Corresponding angles.

So, ∠b = 40°.

We know , That n is a straight line,

Thus,

∠b + ∠c = 180°

∠c = 180 - 40

= 140°.

Thus, ∠c = 140°