Higher June 2025 Paper 2 Q4
4 Using ruler and compasses only, construct the perpendicular bisector of the line \(AB\)
Show all your construction lines.

(2)
| Scheme | Marks |
|---|---|
| Bisector with construction arcs | B2 |
| (2) | |
| (2 marks) |
Notes
B2: B2 for a fully correct perpendicular bisector with 2 pairs of intersecting arcs shown
(the line and the arcs can intersect on or within the overlay guidelines)
(B1 for 2 pairs of intersecting arcs and no perpendicular bisector drawn
or
for a correct bisector perpendicular drawn within or on guidelines but no arcs or insufficient arcs
or
one pair of intersecting arcs and perpendicular bisector drawn on just one side of \(AB\))
NB Overlay is available