O-LevelMathematicsGeometry4024/11 · Oct/Nov 2018 · Q195 Marks

[Figure 19.1]

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 2018). The mark or mark type is shown in brackets.

19(a) 96° to 98° [1]
19(b)(i) Acceptable bisector of angle ABC with correct arcs [2]
B1 for an acceptable angle ABC bisector with no/incorrect arcs.
or SC1 for a very short line correctly constructed.
19(b)(ii) Acceptable perpendicular bisector of AB with two pairs of correct arcs [2]
B1 for an acceptable perpendicular bisector of AB with no/incorrect/only one pair of arcs
or B1 for two pairs of correct arcs, without a line joining the points of intersection
or SC1 for a very short line correctly constructed.

On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.

Topic: Geometry, O-Level Mathematics (syllabus 4024). Structured question, 5 marks.
Source: O-Level Mathematics, Oct/Nov 2018 Paper 1 Variant 1, question 19.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content