Y5 Maths

Year 5 Regular and Irregular Polygons

This Year 5 Regular and Irregular Polygons lesson covers the prior learning of describing and drawing 2D shapes, before moving onto the main skill of recognising and distinguishing between regular and irregular polygons.
The lesson starts with a prior learning worksheet to check pupils’ understanding. If they need more practice, you can choose other resources for that step. The interactive lesson slides recap the prior learning before moving on to the main skill. Children can then practise further by completing the activities and can extend their learning by completing an engaging extension task.

National Curriculum Objective

​Mathematics Year 5: (5G2b) Distinguish between regular and irregular polygons based on reasoning about equal sides and angles

Due to the nature of the questions on the worksheet, the Extension worksheet is not available in interactive format.

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2 Teaching Support

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Lesson Slides

Lesson Slides

These lesson slides guide pupils through the prior learning of describing and drawing 2D shapes, before moving onto the main skill of recognising and distinguishing between regular and irregular polygons.. There are a number of questions to check pupils' understanding throughout.

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Lesson Slides

These are the same as the lesson slides on Classroom Secrets. You can assign this as an activity for pupils to access individually in school or remotely from home.

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Video Tutorial

Jade identifies 2D shapes in this Regular and Irregular Polygons Video Tutorial and uses key terminology including polygon, equal angle and sides.

1 Prior Learning

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Worksheet

Worksheet

This worksheet recaps the prior learning of describing and drawing 2D shapes, before moving onto the main skill of recognising and distinguishing between regular and irregular polygons.

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Full Step

Full Step

For further practice, visit the full step where you will find a selection of further resources and activities such as a differentiated resource pack, homework/extension worksheet and discussion problem.

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Interactive Activity

This Year 3 Recognise and Describe 2D Shapes Game checks pupils’ understanding of recognising lines of symmetry and angles within shapes.

3 Activities

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Worksheet

Worksheet

This worksheet includes varied fluency, reasoning and problem solving questions for pupils to practise the main skill of recognising and distinguishing between regular and irregular polygons.

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Full Step

Full Step

For further practice, visit the full step where you will find a selection of further resources and activities such as a differentiated resource pack, homework/extension worksheet and discussion problem.

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Interactive Activity

This Year 5 Regular and Irregular Polygons Game checks pupils’ understanding of regular and irregular polygons.

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Flash Cards Activity

In these Year 5 Regular and Irregular Polygons Flashcards, pupils will identify regular polygons based on given lengths, determine whether a statement about the interior angles in a regular pentagon is true, recognise which polygon’s angles are not all equal, pinpoint the irregular quadrilateral and classify a hexagon as ‘regular’ or ‘irregular’.

4 Extension

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Extension

Extension

This calculating angles around a point extension task includes a challenge activity which can be used to further pupils' understanding of the concepts taught in the calculating regular and irregular polygons lesson.

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Challenge Activity

This Year 5 Regular and Irregular Shapes Maths Challenge checks pupils’ understanding of regular and irregular polygons within a problem solving context.