Correct Answer - Option 2 : DF = 5 cm; ∠E = 60°
Given:
ΔABC ≅ ΔFDE
AB = 5 cm, ∠B = 40° and ∠A = 80°
Concept:
The corresponding sides and angles of two congruent triangles are equal.
Calculation:
In ΔABC, ∠C = 180 - 80 - 40 = 60º
⇒ ∠E = 60º
Since, AB = 5 cm
⇒ FD = 5 cm
∴ DF = 5 cm; ∠E = 60º