A-Level Maths: Coordinate Geometry Revision

Coordinate Geometry is a core part of A-Level Maths. Revise the key concepts and common mistakes below, then lock them in with the free games.

Key concepts

Angle rulesAngles on a line, around a point, in triangles and parallel lines.

PolygonsInterior and exterior angles of polygons.

Circle theoremsAngle and chord properties of circles.

TransformationsTranslation, reflection, rotation and enlargement.

Congruence & similarityIdentical shapes versus same shape, different size.

ConstructionsAccurate drawings using compasses and a ruler.

Questions where students often pick the tempting wrong answer — make sure you know the right one:

What happens to angles when you enlarge a shape?✗ They get bigger with the shape. ✓ They stay the same — only side lengths change.

Do shapes with the same perimeter have the same area?✗ Yes, perimeter fixes the area. ✓ No — equal perimeters can give very different areas.

Test yourself with these quick revision games for this topic: