# Geometry

Categories: gcse geometry

This section covers the geometry topic in GCSE Mathematics. It includes:

- Geometry rules
- Parallel lines
- Polygons
- Regular polygons
- Triangles
- Quadrilaterals
- More quadrilaterals
- Interior/exterior angles
- Circle geometry
- Tangent and radius
- Two radii
- Chord bisector
- Angle at centre
- Angle in semicircle
- Transformations

Many of these topics are also covered by videos on the Youtube channel GraphicMaths.

## See also

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