2D and 3D shape: To identify regular and irregular polygons by reasoning about equal sides and angles

Today, we will think about regular and irregular polygons and identify the number of sides and angles that make up the shape.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.How many lines of symmetry does a rectangle have?

1/5

Q2.How many lines of symmetry does an equilateral triangle have?

2/5

Q3.How many lines of symmetry does a regular hexagon have?

3/5

Q4.How many lines of symmetry does this shape have?

4/5

Q5.How many lines of symmetry does this shape have?

5/5

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.How many lines of symmetry does a rectangle have?

1/5

Q2.How many lines of symmetry does an equilateral triangle have?

2/5

Q3.How many lines of symmetry does a regular hexagon have?

3/5

Q4.How many lines of symmetry does this shape have?

4/5

Q5.How many lines of symmetry does this shape have?

5/5

Video

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

To identify regular and irregular polygons

Exit quiz: List the letters of the shapes for which each statement is true.

Q1.There is a right angle at every vertex.

1/4

Q2.It has only one pair of parallel lines.

2/4

Q3.It is a regular shape.

3/4

Q4.It is not a polygon.

4/4

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

To identify regular and irregular polygons

Exit quiz: List the letters of the shapes for which each statement is true.

Q1.There is a right angle at every vertex.

1/4

Q2.It has only one pair of parallel lines.

2/4

Q3.It is a regular shape.

3/4

Q4.It is not a polygon.

4/4

Lesson summary: 2D and 3D shape: To identify regular and irregular polygons by reasoning about equal sides and angles

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