Constructions

John Page’s excellent Math Open Reference site includes the constructions required at GCSE level (examination taken at the end of Key Stage 4 (14-16). The following are required by AQA.

You must show all compass marks clearly, to quote a senior examiner:
‘No arcs, no marks!’

Construct the perpendicular bisector of a line

Bisecting an angle

Construct a 60° angle

Construct a perpendicular from a point to a line

Perpendicular at a point on a line

Construct a triangle given 3 sides 

All the constructions on the site are listed here.

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