4MA1/2H Jun 2019, Question 2: Constructing Triangles
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 2 marks
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The question, in short
Using ruler and compasses, construct the perpendicular bisector of line DE, showing all construction lines.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Place compass point on D, draw arcs above and below the line DE using a radius greater than half of DE
- 2Place compass point on E, draw arcs above and below the line DE with the same radius, intersecting the first set of arcs
- 3Draw a straight line through the two points where the arcs intersect, extending it across the line DE
- 4This line is the perpendicular bisector of DE
AnswerCorrect perpendicular bisector of line DE with two pairs of intersecting arcs from D and E, showing equal radius construction
Stuck on a step? Read the free lesson: Constructing Triangles
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