GCSE OCR Circles, sectors and arcs - OCR Circumference of a circle Circles are 2D shapes with one side and no corners. The circumference is always the same distance from the centre - the radius ...

GCSE Edexcel Circles, sectors and arcs - Edexcel Circumference of a circle The circumference of a circle is its outside edge, and is the same distance from the centre at every point along its length.