# Sides and vertices on 2D shapes

## Learning focus

Learn about the properties of 2D shapes.

This lesson includes:

• a catch-up quiz
• two videos
• a learning summary
• an activity

# Quiz

To get started, let's see how well you know this topic already. Take the catch-up quiz below to find out.

# Learn

Watch this video from KS1 Maths that explores the properties of some 2D shapes.

## Properties of 2D shapes

Here are three 2D shapes. What properties do they have?

2D shapes have sides and vertices.

A vertex is a point where two or more lines meet. The plural of vertex is vertices.

Let's have a look at the properties of these shapes.

The triangle has 3 sides and 3 vertices.

The square has 4 sides and 4 vertices.

The hexagon has 6 sides and 6 vertices.

## Remember

A 2D shape is a flat shape with sides, vertices and sometimes lines of symmetry.

If the sides and vertices on a shape are all the same, the shape is regular.

Before we move on to some activities, watch this fun song that will help you remember all about 2D shapes.

## Top tip

You can count the number of sides or the number of vertices on a 2D shape – they are both the same!

# Practise

## Activity 1

2D shape hunt

Let's see what 2D shapes we can find around the house.

You will need a pencil and a piece of paper.

Look around the house for 2D shapes. Draw them on your piece of paper.
Can you draw and label:

• the sides
• the vertices