Question

Find each angle in the figure giving reasons. ​

Answer 1

Answer:

a=40° and b=140°

Step-by-step explanation:

alternate interior angles

Answer 2

Given in the question image that:

EC||AB||DF

since,

EC||AB

Therefore,

Angle ECA = angle CAB

(Being alternate interior angles)

So,

Angle CBA = angle "a" = 40°

Also

Since,

AB||DF

Therefore

Angle ABD = Angle BDF

( being alternate interior angles)

So,

Angle BDF = Angle "b" = 140°