It is given that ∆ABC ≅ ∆PQR, AB = 5 cm, ∠B = 40°, and ∠A = 80°. Which of the
following options is true?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. PQ = 5 cm and ∠R = 60°
Given that
It is given that ∆ABC ≅ ∆PQR, AB = 5 cm, ∠B = 40°, and ∠A = 80°
then
AB = PQ = 5cm
∠B = ∠Q = 40º
∠A = ∠P = 80°
We know that
∠P + ∠Q + ∠R = 180º
∠P = 180 - 40 - 80 = 60º