# Recognise and sort polygons

I can explain what a polygon is and sort polygons in different ways.

# Recognise and sort polygons

I can explain what a polygon is and sort polygons in different ways.

## Slide deck

## Lesson details

### Key learning points

- A polygon has straight sides.
- The sides of a polygon meet at vertices.
- A polygon is a 2D shape.
- Polygons can be sorted in different ways.
- Properties of polygons include the number of sides and the number of vertices.

### Common misconception

Some children might not count the sides or vertices accurately because they lose track of where they started counting.

Ask children how they can make sure they only count each side or vertex once. Model marking each side or vertex as you count it.

### Keywords

Polygon - A 2D shape made up of 3 or more straight sides.

2D / two dimensional - A shape with only two measurable dimensions, e.g. width and length, but no thickness.

Sides - The outside edges of a shape.

Vertices - A vertex is the point where two lines meet. The plural is vertices.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Worksheet

## Starter quiz

### 6 Questions

rectangle

circle

triangle

has four straight sides and four vertices

has one curved line

has thee straight sides and three vertices