Answer :

It is given in the question that,

where,


AB = 5 cm


FD = 5 cm


B = 40°


A = 80°


We know that sum of all angles of a triangle is equal to 1800


A + B + C = 180o


80o + 40o + C = 180o


C = 180o - 1200


= 60o


As, Angle C = Angle E


Angle E = 60o


Hence, option (B) is correct

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