# Angle notation and problem solving

In this lesson, we will learn about how to problem solve with angles in polygons, along with learning notations for referring to angles.

#### 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.The exterior angles of a hexagon sum to 540 degrees.

1/5

Q2.A triangle ALWAYS has each exterior angle as 60 degrees.

2/5

Q3.The general formula for working out the mean exterior angle of an n-sided polygon is...

3/5

Q4.The calculation to work out the sum of the interior angles for an octagon would be...

4/5

Q5.180n - 360 is a generalisation that tells us the...

5/5

#### 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.The exterior angles of a hexagon sum to 540 degrees.

1/5

Q2.A triangle ALWAYS has each exterior angle as 60 degrees.

2/5

Q3.The general formula for working out the mean exterior angle of an n-sided polygon is...

3/5

Q4.The calculation to work out the sum of the interior angles for an octagon would be...

4/5

Q5.180n - 360 is a generalisation that tells us the...

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"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# 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.

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

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

# Angle notation and problem solving

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

Q1.Squares tesselate with each other.

1/5

Q2.Equilateral triangles tesselate with each other.

2/5

Q3.ABC is a triangle. Angle ABC is 90 degrees. Angle BAC is 23 degrees. Angle CAB is...

3/5

Q4.ABC is a triangle. Angle ABC is 90 degrees. Angle BAC is 23 degrees. Angle CBA is...

4/5

Q5.ABC is a triangle. Angle ABC is 90 degrees. Angle BAC is 23 degrees. Angle ACB is...

5/5

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

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

# Angle notation and problem solving

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

Q1.Squares tesselate with each other.

1/5

Q2.Equilateral triangles tesselate with each other.

2/5

Q3.ABC is a triangle. Angle ABC is 90 degrees. Angle BAC is 23 degrees. Angle CAB is...

3/5

Q4.ABC is a triangle. Angle ABC is 90 degrees. Angle BAC is 23 degrees. Angle CBA is...

4/5

Q5.ABC is a triangle. Angle ABC is 90 degrees. Angle BAC is 23 degrees. Angle ACB is...

5/5

# Lesson summary: Angle notation and problem solving

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Dance