Foundation June 2024 Paper 1 Q8
8 \(OA\), \(OB\) and \(OC\) are three straight lines.
(i) Work out the size of the angle marked \(x\). (2)
(ii) Give a reason for your answer. (1)
| Answer | Mark | Mark scheme |
|---|---|---|
| 50 | M1 | for \(360 - 220 - 90\) oe |
| A1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| Reason | C1 | for angles at a point add up to 360 Acceptable examples • A full turn adds up to 360 • Full rotation is 360 Not acceptable examples • Angles in a circle add to 360 • A whole circle adds up to 360 • It must add up to 360 degrees • \(220 + 90 = 310,\ 360 - 310\) • Angles at a point add up to 180 • Angles on a straight line add to 180 |
Additional guidance
Underlined words need to be shown
Note: If line \(AO\) or \(OC\) or \(BO\) is extended and used to find \(x\) in (i) then allow C1 for angles on a straight line add to 180