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O-LevelMathematicsGeometry4024/12 · May/June 2019 · Q22 Marks

Use a straight edge and compasses only in this question. Construct the locus of points inside quadrilateral ABCD that are equidistant from AB and BC. [Figure ABCD]

Construct the locus of points inside quadrilateral ABCD that are equidistant from AB and BC.[2]

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Mark scheme

Marking points from the official mark scheme (May/June 2019). The mark or mark type is shown in brackets.

[2] Acceptable bisector of ∠ABC with correct arcs
[B1] for bisector with no / incorrect arcs

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About this question

Topic: Geometry, O-Level Mathematics (syllabus 4024). Structured question, 2 marks.
Source: O-Level Mathematics, May/June 2019 Paper 1 Variant 2, question 2.

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