Maths

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Generalising angles in polygons (Part 2)

In this lesson, you 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.

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.

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

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Worksheet

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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:

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.

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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The next lesson in:
Angles in polygons
is:
Finding missing angles in polygons

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