Question

pls help me
to solve out

Answer 1

which class you are in

Answer 2

in the first question 
given ⇒ ∠ 2 = ∠4 → let this be first 
         ⇒  ∠ 1 = ∠4 → let this be second
 From first and second 
∠ 1 =∠ 2 =∠ 4 
hence ∠ 1 = ∠2
proved