Follow this link for the BBC bitesize clip and activities.
When you have watched the clip can you complete the attached worksheet? You could print it off or copy the shapes onto a piece of paper and then complete the task.
If you don't have a printer, or want to continue your learning, you can challenge yourself by seeing how many different polygons you can find around your house. you could photograph them, label them with post it notes (if you have permission), make a table to record your findings or draw them.