Draw a ΔPQR, in which QR = 3.5 cm, m∠Q = 40°, m∠R = 60°.

Steps of construction:

(i) Draw QR = 3.5 cm.

(ii) Draw ∠Q = 40°, ∠R = 60° which meet each other at P.

(iii) ΔPQR is the required triangle