Question

It is given the ∆ABC=∆FDE and AB=4 cm, ∠B=40⁰ and ∠E=60⁰,t hen which of the following is true. (A)DE=4cm,∠A=80⁰
(B)DE=4 cm,∠C=80⁰
(C)DF=4 cm,∠A=80⁰
(D)DF=4cm,∠C=80⁰​

Answer 1

Answer:

(C) is the correct answer because the following reasons:-

The interiors angle of triangle is 180° Hence Angle B +Angle E Angle A = 180degree by congruent triangle

and the sides of the congruent triangle of corresponding sides are aslo equal