1. Construct a triangle AOB given that OA = 5 cm, OB = 4.5 cm, and \( \angle AOB = 50^\circ \).

2. Construct a triangle ABC given that \( \angle A = 120^\circ \), AB = AC = 3 cm. Draw the bisector of angle A.

3. Construct a triangle ABC in which \( \angle B = 90^\circ \) and AB = 4 cm and BC = 3 cm.

4. Construct a triangle PQR with \( QR = 4 \ cm, PQ = 3 \ cm \text{ and } \angle Q = 45^\circ \).

5. Construct a triangle PQR in which PR = 5.6 cm, QR = 3 cm and \( \angle R = 50^\circ \).