# Find the value of missing angles

In this unit we will be studying angles. We will deepen your understanding of angles by applying your understanding to find and calculate missing angles within diagrams and 2-D shapes. You will also consolidate your understanding of properties of shapes, comparing and classifying 2-D shapes. In today’s lesson we will use algebra and bar models to represent problems and calculate missing angles.

# 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.

# Lesson summary: Find the value of missing angles

### It looks like you have not completed the quiz.

To share your results with your teacher please complete the quiz.

The next lesson in Missing angles and lengths is "Compare and classify triangles"