Higher November 2023 Paper 3 Q12
12 \(AF\), \(BC\), \(DE\) and \(DF\) are straight lines.
\(BC\) and \(DE\) are parallel.
Not drawn accurately
\(p\) is three times \(r\).
Work out the size of angle \(p\). [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| Angle labelled as 72 for the correct interior angle of the triangle or angle labelled as 108 for a correct exterior angle of the triangle or \(3r + r + 72 = 180\) or \(4r = 180 - 72\) or \(4r = 108\) | M1 | oe |
| \(\dfrac{180 - 72}{3 + 1}\) or \(\dfrac{108}{4}\) or 27 or \(108 \times \dfrac{3}{4}\) or \(\dfrac{4p}{3} = 108\) | M1dep | oe |
| 81 | A1 |