# Straight line angles and angles around a point

In this lesson, we will review how straight line angles sum to 180 degrees, and how angles around a point sum to 360 degrees.

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 total sum of the interior angles of two triangles would be equal to...

1/5

Q2.If I have a regular pentagon, how many triangles from one distinct point internally can I create?

2/5

Q3.If I have a regular pentagon, what would the total interior angles sum to?

3/5

Q4.If I have a regular octagon, how many triangles from one distinct point internally can I create?

4/5

Q5.If I have a regular octagon, what would the total interior angles sum to?

5/5

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 total sum of the interior angles of two triangles would be equal to...

1/5

Q2.If I have a regular pentagon, how many triangles from one distinct point internally can I create?

2/5

Q3.If I have a regular pentagon, what would the total interior angles sum to?

3/5

Q4.If I have a regular octagon, how many triangles from one distinct point internally can I create?

4/5

Q5.If I have a regular octagon, what would the total interior angles sum to?

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.

Quiz:

# Straight line angles and angles around a point

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

Q1.Angles on a straight line sum to 180 degrees.

1/5

Q2.Angles around a point sum to 180 degrees.

2/5

Q3.If a straight line contains 2 angles, one of which is 54 degrees, what is the size of the other angle?

3/5

Q4.If a + b = 180 degrees, then 2a + 2b = 360

4/5

Q5.Vertically opposite angles are never equal.

5/5

Quiz:

# Straight line angles and angles around a point

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

Q1.Angles on a straight line sum to 180 degrees.

1/5

Q2.Angles around a point sum to 180 degrees.

2/5

Q3.If a straight line contains 2 angles, one of which is 54 degrees, what is the size of the other angle?

3/5

Q4.If a + b = 180 degrees, then 2a + 2b = 360

4/5

Q5.Vertically opposite angles are never equal.

5/5

# Lesson summary: Straight line angles and angles around a point

## 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