Chapter 5 Angles and Trigonometry
5.2 Interior Angles of a Polygon
The sum of the interior angles of a polygon = (n - 2) x 180°, where n is the number of sides. In this section, we learn about angle sum of a polygon, angles in a regular polygon.
If you're a student in a school/college that's based in England, you might be entitled for full access to our eLearning platform where you can access to all our tutorial videos and practice questions.
Please check with the head of Maths or deputy headteacher at your school/college to request access if they've already registered to our free pilot subscription. They can always reach us at the below email:
maths@education-auditorium.co.ukÂ
Note: Due to our safeguard and chilled protection policy; we wouldn't be able to respond to students enquiries directly.
The sum of the interior angles of a polygon  x , where  is the number of sides. In this section, we learn about angle sum of a polygon, angles in a regular polygon.
Using the interior angles of polygons to solve problems.
Interior Angles of a Polygon - Angle sum of a polygon, angles in a regular polygon.