Question

. It is given that ∆ABC≅ ∆ DEF in which AB = 5cm. ∠ = 40° , ∠ = 80° and FD = 5cm.

then which of the following is true?​

Answer 1

Answer:

∆ABC congruence to ∆FDE ,

then,

AB = FD

BC=DE

AC=FE

and

angle ABC = angle FDE

angle BCA = angle DEF

angle CAB =angle EFD

now, given, angle ABC = 40° and angle CAB = 80° and AB = 5 cm

so, angle FDE = 40° and angle EFD= 80°

and FD = 5 cm

also DF = 5 cm

and angle DEF = 60°

so , option ( 2) is correct option .

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