Compare and classify triangles

In today’s lesson we will compare and classify triangles, looking at how to recognise the different types of triangles and the sum of the angles in a triangle.

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!

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.The angles on a straight line add up to:

1/5

Q2.The angles around a point add up to:

2/5

Q3.Calculate the value of angle b.

3/5

Q4.Calculate the value of angle a.

4/5

Q5.Calculate the value of angle g.

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!

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.The angles on a straight line add up to:

1/5

Q2.The angles around a point add up to:

2/5

Q3.Calculate the value of angle b.

3/5

Q4.Calculate the value of angle a.

4/5

Q5.Calculate the value of angle g.

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.

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:

Compare and Classify Triangles - Quiz

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

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.What do the angles in a triangle add up to?

1/5

Q2.What type of triangle is shown in the picture below?

2/5

Q3.Is this statement always true, sometimes true or never true.

3/5

Q4.Which triangle is scalene?

4/5

Q5.What is the value of the missing angle?

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:

Compare and Classify Triangles - Quiz

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

Question 1

Question 2

Question 3

Question 4

Question 5

Q1.What do the angles in a triangle add up to?

1/5

Q2.What type of triangle is shown in the picture below?

2/5

Q3.Is this statement always true, sometimes true or never true.

3/5

Q4.Which triangle is scalene?

4/5

Q5.What is the value of the missing angle?

5/5

Lesson summary: Compare and classify triangles

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