In the given figure, BAD || EF, ∠AEF = 55° and ∠ACB = 25°, find ∠ABC.
Question:

In the given figure, BAD || EF, ∠AEF = 55° and ∠ACB = 25°, find ∠ABC.

Solution:

In the given figure, EF || BD and CE is the transversal.

∴ ∠CAD = ∠AEF         (Pair of corresponding angles)