O-LevelMathematicsGeometry4024/12 · Oct/Nov 2023 · Q145 Marks
[Figure 14]
- (a)Measure angle ABC.[1]
- (b)Using compasses and a straight edge only, construct the perpendicular bisector of AC.[2]
- (c)On the diagram, shade the region inside triangle ABC that is • nearer to A than to C and • more than 6 cm from B.[2]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2023). The mark or mark type is shown in brackets.
- [1] 47 to 51
- [2] Acceptable bisector of line AC with correct arcs
- B1 for acceptable bisector of line AC with no/incorrect arcs
- [2] Correct region shaded
- FT their bisector
- B1 for arc centre B, radius 6 cm
- B1 for correct shading, FT their arc centre B and their bisector dependent on region with bisector and arc as edges
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