In the adjoining figure, p||q. Find the unknown angles.

Explanation:
Given that p||q
We know that
Vertically Opposite angles are equal
⇛ e = f
and
125° and f are linear pair
⇛ 125°+f = 180°
⇛ f = 180°-125°
⇛ f = 55°
⇛ e = 55°
f and a are alternative interior angles which are equal
⇛ e = a
⇛ a = 55°
c and a are alternative interior angles which are equal
⇛ c = a
⇛ c = 55°
a and b are linear pair
⇛ a+b = 180°
⇛ 55° +b = 180°
⇛ b = 180°-55°
⇛ b = 125°
125° and d are corresponding angles which are equal
The corresponding angles are equal. d = 125°
Answer:-
Therefore,