RocketDigitsStart free

All skills › Year 6 › Shapes & Geometry

Year 6 · Shapes & Geometry

Parts of a circle

A circle has a centre, a radius (centre to edge), a diameter (edge to edge through the centre) and a circumference (all the way round).

Try a question

Loading a question…

How to do it

  1. Radius: from the middle to the edge.
  2. Diameter: twice the radius.
  3. Circumference: the outside line.

Worked example

A line from the centre to the edge
Centre to edge
Radius

With a free account, these play as step-by-step animations.

Watch out
The diameter must pass through the centre.

Practise Parts of a circle properly

Ten-question rounds with instant marking, a lesson under every question, stars and badges. Free to start, and the first week includes Premium.

Create a free account

More Shapes & Geometry skills