# Describe and name polygons, including triangles and quadrilaterals

I can recognise and describe polygons including triangles and quadrilaterals.

# Describe and name polygons, including triangles and quadrilaterals

I can recognise and describe polygons including triangles and quadrilaterals.

## Slide deck

## Lesson details

### Key learning points

- The names of polygons are linked to the number of sides/vertices they have.
- A quadrilateral is any polygon with 4 sides.
- A triangle is any polygon with 3 sides.
- Squares and rectangles are quadrilaterals.

### Common misconception

Children may mistake a 'triangle-like' shape for a triangle.

Provide opportunities to explore and handle cut-outs of triangles and triangle-like shapes. Describe and compare how the sides and corners feel. Touch the part of the shape that shows that it is not a triangle and explain how you know.

### Keywords

Quadrilateral - A polygon with 4 sides and 4 vertices.

Rectangle - A polygon with 4 sides and 4 'square corners'.

Square - A polygon with 4 equal sides and 4 'square corners'.

Triangle - A polygon with 3 sides.

### 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

## Exit quiz

### 6 Questions

have 3 vertices and 3 straight sides

have 4 vertices and 4 straight sides