Subject :IMO Class : Class 7

In the figure, *ABCD* is a rectangle, Δ*CEF* is an equilateral triangle. Find *x*.

A 25º

B 30º

C 20º

D 50°

given that Î CEF is an equilateral triangle, each of its angles are 60Â° and also shown in the figure that DC bisects angle C, so angle x should be 30Âº