SP001 Maths Paper 2 - Question 14

John had a piece of paper ABCD in the shape of a parallelogram.
He folded it along the line EF as shown below.

a) Find $\angle x$.
b) Find $\angle y$.

Ans: a) ______________${}^{\circ}$ [1]
Ans: b) ______________${}^{\circ}$ [3]