Foundation November 2020 Paper 3 Q22
22 \(ABCD\) represents the plan of a field.
There is a path across the field that
starts at \(B\)
is the same distance from \(BA\) and \(BC\).
Using ruler and compasses, show the position of the path. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| Two arcs of equal radius or a single arc, centre \(B\), cutting \(BA\) and \(BC\) or a single arc cutting \(BC\) with radius \(= BA\) | M1 | \(\pm\) 2 mm \(\pm\) 2 mm |
| Fully correct method of construction of bisector of angle \(ABC\) | A1 |
Additional guidance
| Award M1 if correct arc(s) seen alongside incorrect arc(s) | |
| Angle bisector does not need to meet \(AD\) and ignore angle bisector extended beyond \(AD\) | |
| Accept an arc touching the line \(BA\) or \(BC\) | |
| No arcs seen on \(BC\) | M0 |
 |