# Comparing & classifying isosceles and scalene triangles

In this lesson, we will compare different triangles and introduce isosceles and scalene triangles.

#### 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.Which properties do all triangles have?

1/6

Q2.What is the name given to a regular triangle?

2/6

Q3.Which of the statements best describe an equilateral triangle?

3/6

Q4.Which statement best describes a right angled triangle

4/6

Q5.It is possible to create a large equilateral triangle from either...

5/6

Q6.If a triangle has the angles: 60 degrees and 30 degrees, what is the 3rd angle?

6/6

#### 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.Which properties do all triangles have?

1/6

Q2.What is the name given to a regular triangle?

2/6

Q3.Which of the statements best describe an equilateral triangle?

3/6

Q4.Which statement best describes a right angled triangle

4/6

Q5.It is possible to create a large equilateral triangle from either...

5/6

Q6.If a triangle has the angles: 60 degrees and 30 degrees, what is the 3rd angle?

6/6

# 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:

# Comparing and classifying isosceles and scalene triangles

Questions that test your knowledge on 2 types of triangles (isosceles & scalene triangles)

Q1.What is the name given to a triangle with 3 equal sides?

1/5

Q2.What is the name given to a triangle which has the following three angles: 80°, 40° and 60° ?

2/5

Q3.If a triangle has the angles of 90° and 60°, what is the third angle?

3/5

Q4.Which of these are NOT interior angles of a triangle?

Select two (2) boxes

4/5

Q5.A right angled triangle can also be ...

5/5

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

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

# Comparing and classifying isosceles and scalene triangles

Questions that test your knowledge on 2 types of triangles (isosceles & scalene triangles)

Q1.What is the name given to a triangle with 3 equal sides?

1/5

Q2.What is the name given to a triangle which has the following three angles: 80°, 40° and 60° ?

2/5

Q3.If a triangle has the angles of 90° and 60°, what is the third angle?

3/5

Q4.Which of these are NOT interior angles of a triangle?

Select two (2) boxes

4/5

Q5.A right angled triangle can also be ...

5/5

# Lesson summary: Comparing & classifying isosceles and scalene triangles

## 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