4MA1/1FR Jun 2020, Question 18: Constructing Triangles
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1FR (Foundation) · Calculator · 2 marks
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The question, in short
Using only a ruler and compasses, construct the bisector of angle ABC, showing all construction lines.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Draw arc from B intersecting AB and BC.
- 2From each intersection point, draw arcs inside angle ABC that cross each other.
- 3Draw straight line from B through the intersection of the arcs.
AnswerAn arc from B crossing AB and BC, then arcs from those two points meeting inside the angle, with a line drawn from B through the meeting point
Stuck on a step? Read the free lesson: Constructing Triangles
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