Assignment

8:25 AM _QO C 1. Circle Theore... .. . D. E and F are points on the circumference of a circle, centre O. Angle DOF = 130. (i) Work out the size of angle DEF. (ii) Give a reason for your answer. (2) (b) In the diagram, A, B and C are points on the circumference of a circle, centre O. Angle ABC = 85, (i) Work out the size of the angle marked x". (ii) Give a reason for your answer. (2) (4 marks) $14. Diagram NOT accurately drawn S 320 S and T are points on the circumference of a circle, centre O. PT is a tangent to the circle. SOP is a straight line. Angle OPT = 32. Work out the size of the angle marked x. Give reasons for your answer. 6 /6