1MA0 Higher March 2013 Paper 1 Q13
13
Diagram NOT accurately drawn
The diagram shows a square and 4 regular pentagons.
Work out the size of the angle marked \(x\). (3)
| Answer | Mark | Notes |
|---|---|---|
| 54 | 3 | M1 for 180 – 360 ÷ 5 or 108 seen as the interior angle of a pentagon M1 (dep on previous M1) for 360 – 2 × ‘108’ – 90 A1 for 54 cao OR M1 for 180 × (5 – 2) (= 540) ÷ 5 or 108 given as the interior angle of a pentagon M1 (dep on previous M1) for 360 – 2 × ‘108’ – 90 A1 for 54 cao |