Polygon Angles Level 3Practise the skills of finding interior and exterior angles of polygons to answer these questions. 
You can earn a trophy if you get at least six questions correct.
This is Polygon Angles level 3. You can also try:
Level 1
Level 2
Here are some related exercises:
Angles in Triangles
Angle Points
Angles in Parallel Lines
Angles in Circles
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 




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Level 1  Name and find the size of the angles in regular polygons.
Level 2  Find the size of the angles marked with letters in simple diagrams.
Level 3  A mixture of problems related to the angles in polygons.
Exam Style Questions  A collection of problems in the style of GCSE or IB/Alevel exam paper questions (worked solutions are available for Transum subscribers).
More Angle Activities including lesson Starters, visual aids, investigations and selfmarking exercises.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
See the National Curriculum page for links to related online activities and resources.
The sum of the exterior angles of any polygon is 360°.
The sum of the interior angles of an nsided polygon is (180n − 360)°.
Each exterior angle of an nsided regular polygon is 360° ÷ n
Each interior angle of an nsided regular polygon is 180° − 360° ÷ n
Interactive animation showing why exterior angles add up to 360°
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