Higher June 2017 Paper 5 Q16
16 A, B, C and D are points on the circumference of a circle, centre O.
Not to scale
Angle BAD = 52°.
(a) Work out angle \(x\).
Give a reason for your answer. [2]
Give a reason for your answer. [2]
(b) Work out angle \(y\).
Give a reason for your answer. [2]
Give a reason for your answer. [2]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 104 Angle at centre is twice angle at circumference | 2 | B1 for 104 | With no incorrect statement Must use underlined terms. Accept reverse: angle at circumference is half angle at centre Accept arc for circumference but not edge |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 128 Opposite angles in a cyclic quadrilateral [are supplementary oe] | 2 | B1 for 128 | With no incorrect statement Must use underlined terms Condone opp angles in cyclic quad = 180 |