# Generalising angles in polygons (Part 2)

In this lesson, we will learn how to apply the generalisation of the total interior angles in an n-sided polygon.

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.

#### Unit quizzes are being retired in August 2023

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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.A megagon has how many sides?

1/5

Q2.How many internal triangles can be formed within a megagon?

2/5

Q3.How many internal triangles from a distinct point can be formed within an icosagon?

3/5

Q4.The general formula for working out the total interior angles in a n-sided polygon is...

4/5

Q5.Using the formula, if I wanted to work out the total interior angles for a 360-sided shape, it would be...

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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
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.A megagon has how many sides?

1/5

Q2.How many internal triangles can be formed within a megagon?

2/5

Q3.How many internal triangles from a distinct point can be formed within an icosagon?

3/5

Q4.The general formula for working out the total interior angles in a n-sided polygon is...

4/5

Q5.Using the formula, if I wanted to work out the total interior angles for a 360-sided shape, it would be...

5/5

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close 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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Generalising angles in polygons (Part II)

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.If I split a 7 sided shape into 5 triangles, I have done the correct process to find the total interior angles within the shape.

1/5

Q2.Which of the following WOULD give you the total interior angles within a n-sided polygon?

2/5

Q3.Which of the following WOULD NOT give you the total interior angles of a n-sided polygon?

3/5

Q4.The sum of the total interior angles in a 30 sided shape is...

4/5

Q5.What would be the correct calculation to work out the total sum of the interior angles in a decagon?

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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Generalising angles in polygons (Part II)

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.If I split a 7 sided shape into 5 triangles, I have done the correct process to find the total interior angles within the shape.

1/5

Q2.Which of the following WOULD give you the total interior angles within a n-sided polygon?

2/5

Q3.Which of the following WOULD NOT give you the total interior angles of a n-sided polygon?

3/5

Q4.The sum of the total interior angles in a 30 sided shape is...

4/5

Q5.What would be the correct calculation to work out the total sum of the interior angles in a decagon?

5/5

# Lesson summary: Generalising angles in polygons (Part 2)

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## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Dance