4MA1/2H Jun 2025, Question 4: Constructing Triangles
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 2 marks
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The question, in short
Using only a ruler and compasses, construct the perpendicular bisector of line AB, showing all construction lines.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Set compasses to more than half of AB
- 2Draw arcs from A above and below the line
- 3With the same radius draw arcs from B to cross them
- 4Join the two crossing points with a straight line
AnswerA straight line through the midpoint of AB at right angles to AB, with two pairs of intersecting arcs drawn from A and B
Stuck on a step? Read the free lesson: Constructing Triangles
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