Answer:
a.) 4x = 2(x + 14)
b.) Measure of A = 56°
  Measure of B = 56°
Step-by-step explanation:
We know that,
When two lines are crossed by another line transversal line , the angles in matching corners are called corresponding angles.
Also,
When two lines are parallel then the Corresponding Angles are equal.
Given that,
A = 4x and B = 2(x+14).
i.e.
∠A = 4x and ∠B = 2(x+14)
a.)
Now,
As A and B are parallel
So,
∠A = ∠B
⇒4x = 2(x + 14)         Â
(This is the equation that represent the corresponding angle relationship between A and B.)
b.)
Now,
⇒4x = 2x + 2(14)
⇒4x = 2x + 28
⇒4x - 2x = 28
⇒2x = 28
⇒x = 14
So,
we get
∠A = 4(14)
   = 56
⇒∠A = 56°
and
∠B = 2(14 + 14)
   = 2(28)
   = 56°
⇒∠B = 56°
∴ we get
Measure of A = 56°
Measure of B = 56°