The angles of a triangle sum to 180&deg;.<br>Ratio angle PQR : angle RPQ : angle PRQ = 1 : 6 : 2 gives 9 equal parts.<br>1 part = 180&deg; / 9 = 20&deg;.<br>Angle RPQ = 6 parts = 6 times 20&deg; = 120&deg;.<br><br>Final Answer: 120&deg;