In this activity, we will be learning to identify the parts of a circle.

A circle can be drawn using a **pair of compasses**.

In the diagram below, the distance set between the point and the pencil tip is called the **radius**.

The point marks the **centre **of the circle.

The distance straight across from one edge to the other, going through the centre, is called the **diameter.**

The **diameter **is **twice **as long as the **radius**.

The **radius **is **half **the length of the **diameter**.

When we draw a circle, the pencil line around the perimeter is called the **circumference**.

It is a curved line.

Let's try an example question together.

**Example**

What is the perimeter of a circle called?

**Answer**

We know that the perimeter is the outside edge or edges of a shape.

The perimeter of a circle is called the circumference.

Does that all make sense?

Now it's time to try some questions about parts of circles.

Good luck!