(a) Write down the size of angle Give a reason for your answer. BAD. ...................................° (2) (b) Work out the size of angle ODC. Give reasons for your answer. ...................................° (4) [June 2012 NonCalc] *21 and are points on the circumference of a circle, centre B, C D O. and are tangents to the circle. Angle = 50° AB AD Work out the size of angle Give a reason for each stage in your working. BCD. [Nov 2011 NonCalc] 19. is a diameter of a circle. is a point on the circle. is the point inside the circle such that AB C D and is parallel to BD = BC BD CA. Find the size of angle You must give reasons for your answer. CDB. [June 2011 Calc] 21. and are points on the circumference of a circle. A, B, C D Angle = 54. Angle = 28. ABD BAC
(a) Write down the size of angle BAD. Give a reason for your answer. ...................................° (2) (b) Work out the size of angle ODC. Give reasons for your answer. ...................................° (4) [June 2012 NonCalc] *21 B, C and D are points on the circumference of a circle, centre O. AB and AD are tangents to the circle. Angle = 50° Work out the size of angle BCD. Give a reason for each stage in your working. [Nov 2011 NonCalc] 19. AB is a diameter of a circle. C is a point on the circle. D is the point inside the circle such that BD = BC and BD is parallel to CA. Find the size of angle CDB. You must give reasons for your answer. [June 2011 Calc] 21. A, B, C and D are points on the circumference of a circle. Angle ABD = 54. Angle BAC = 28.
GCSE-CircleTheoremExamQuestions.docx