Question

It is given that Δ ABC and ΔFDE are congruent and AB = 6 cm, ∟B = 80° and

∟A = 40°. What is the length of side DF of Δ FDE and its ∟E ?It is given that Δ ABC and ΔFDE are congruent and AB = 6 cm, ∟B = 80° and

∟A = 40°. What is the length of side DF of Δ FDE and its ∟E ?​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

given that ∆ABC is congruent to ∆ FDE

So DF = BA _____ ( By cpct)

DF = 6cm

For ∠E

In ∆ ABC

∠A+ ∠B+ ∠C = 180 _____ (angle sum property)

40°+80°+ ∠C = 180

∠C = 180-120 = 60°

Now ∠E = ∠C. _____ (by cpct)

∠E = 60°