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Subject :IMO    Class : Class 7

In the figure, ABCD is a rectangle, ΔCEF is an equilateral triangle. Find x.

A 25º
B 30º
C 20º
D 50°

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

Ans 1:

Class : Class 7
answer is :- option(A)-25

Ans 2:

Class : Class 7

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