Question

Q2. It is given that Δ ABC ≅ Δ FDE and AB = 5 cm, ∠B = 40° and ∠A = 80°. Then which   of the following is true?

    a) DF = 5 cm, ∠F = 60°

    b) DF = 5 cm, ∠E = 60°

    c) DE = 5 cm, ∠E = 60°

d) DE = 5 cm, ∠D = 40°


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Answer 1

Answer:-

Option b)DF=5cm,∠E = 60°.

Answer 2

Answer:

b) DF = 5 cm, ∠E = 60°

Step-by-step explanation:

Since Δ ABC ≅ Δ FDE

by cpct AB=DF

∠C =∠E

∠A + ∠B +∠C=180

80 + 40 + ∠C = 180  

∠C = 180 - 120

∠C = ∠E = 60

∴DF = 5 cm, ∠E = 60°