Circle Theorems Exam Questions In the diagram below points Q and S lie on a circle centre O. SR is a tangent to the circle at S. Angle QRS = 40° and angle SOQ = 80° Prove that triangle QSR is isosceles.
____________________________________________________________________ A, B and C are points on the circumference of a circle with centre O. BD and CD are tangents. Angle BDC = 40°
(i) Work out the value of p. (ii) Hence write down the value of q. _____________________________________________________________________ The tange