Polygons and triangles
In this lesson, we will learn that the sum of the interior angles of a polygon can be found using triangles.
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.
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: Polygons and triangles
It looks like you have not completed one of the quizzes.
To share your results with your teacher please complete one of the quizzes.
Time to move!
Did you know that exercise helps your concentration and ability to learn?
For 5 mins...
On the spot: