# Calculating angles within a shape 1

In this lesson, we will learn about different types of triangle and how to calculate angles within a triangle.

#### 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.What is the size of the missing angle?

1/5

Q2.What is the size of the missing angle?

2/5

Q3.What is the size of the missing angle?

3/5

Q4.How is this drawing incorrectly drawn?

4/5

Q5.What angle would 4pm show?

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.What is the size of the missing angle?

1/5

Q2.What is the size of the missing angle?

2/5

Q3.What is the size of the missing angle?

3/5

Q4.How is this drawing incorrectly drawn?

4/5

Q5.What angle would 4pm show?

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:

# Calculating angles within a shape 1: triangles

Triangles, angles within triangles and multi step problems Source of all images : Mr Kelsall or Oak National Academy

Q1.What type of triangle has 3 different angles and 3 different sides

1/5

Q2.What do angles inside a triangle add up to?

2/5

Q3.What are the size of the angles within an equilateral triangle?

3/5

Q4.What is the size of angle a?

4/5

Q5.What is the size of angle b?

5/5

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

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

# Calculating angles within a shape 1: triangles

Triangles, angles within triangles and multi step problems Source of all images : Mr Kelsall or Oak National Academy

Q1.What type of triangle has 3 different angles and 3 different sides

1/5

Q2.What do angles inside a triangle add up to?

2/5

Q3.What are the size of the angles within an equilateral triangle?

3/5

Q4.What is the size of angle a?

4/5

Q5.What is the size of angle b?

5/5

# Lesson summary: Calculating angles within a shape 1

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Chair yoga