In this activity, we will be identifying 2D shapes from a description.

First of all, let's remind ourselves of the 2D shapes.

There is a **square**.

A square has four sides and four corners.

We will also be using **lines of symmetry** to describe a shape.

A line of symmetry is when each side is the same - it matches either side of the line.

If we folded the shape along the line of symmetry the folded shape would be the same size.

If this M was folded along the line of symmetry it would all match up.

Here are the lines of symmetry on a square:

A **rectangle** is similar to a square because it also has four corners and four sides.

However, on a rectangle, the sides are not all the same.

The opposite sides are the same length, but the sides touching are different:

Here are the lines of symmetry on a rectangle - there are only two:

Then we have a **circle** which has just one, round side.

A circle has an infinite number of symmetry lines and that means never ending! Wherever you draw a straight line from one side to another through the centre of the circle, it will be symmetrical.

Here's an** oval**, which also has just one, round side. It is a bit like a stretched-out circle.

An oval can have two lines of symmetry like this:

Next, we have a** triangle**. A triangle has three sides and three corners.

Some triangles will have a line of symmetry and some will not - it depends whether or not they are equal.

This triangle will have a line of symmetry down the middle:

We also have a** kite**, which is a kite shape! It has four sides and looks like this:

Let's have a look at the lines of symmetry on a kite:

There is just one line of symmetry on a kite.

Then we have our shapes with lots of sides!

We have a** pentagon** which has five sides and five lines of symmetry.

The lines of symmetry are from each corner straight, across to the other side.

Then, we have the** hexagon** which has six sides and six lines of symmetry.

Last but not least, we have an **octagon**. This has eight sides and eight lines of symmetry.

Now that we've been through all the shapes, let's have a look at an example question.

**Example**

This shape has four sides.

All the sides are equal.

What shape is it?

__Answer__

Ok, which shapes have four sides?

A square, a rectangle, and a kite.

Which of these shapes has all sides that are the same length?

It is a square.

A rectangle and a kite have lines of a different length - look back at the pictures we have here to check.

Shall we have a go at some questions now?