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Interior and Exterior Angles of a Polygon

Geometry: In this video we explain how to calculate interior and exterior angles of a polygon, how to find the the sum of interior or exterior angles and how to find the number of sides of a polygon with just an angle. Practice questions are provided at the end of the video and more can be found on our 'Interior and Exterior Angles: Test Your Knowledge' video:    • Interior & Exterior Angles Practice Q...   Skip to: 00:00 Introduction 00:14 What is an interior angle and what is an exterior angle? 00:23 How to find the sum of interior angles 01:26 Formula for sum of interior angles 02:06 How to find an interior angle (for regular polygons) 02:24 Sum of exterior angles 02:26 Finding an exterior angle with a given interior angle 02:54 Finding the number of sides of a polygon (for regular polygons) 03:06 Practice questions We spend a lot of time and money making these videos, so here is a link to our Buy Me A Coffee page...feel free to contribute if you like: https://buymeacoffee.com/minitymaths Below are some links to products we recommend: Casio Scientific Calculator Black: https://amzn.to/3E4FBRF Casio Scientific Calculator Blue: https://amzn.to/2Zb5twk Casio Scientific Calculator Pink: https://amzn.to/3lWdHBf An excellent book if you're teaching mathematics or helping your children: The Elephant in the Classroom by Jo Boaler: https://amzn.to/3vwzra4 Linking rods can be used for a variety of topics: https://amzn.to/3vuZnD7 Educational maths help videos to learn mathematics for school, exams or just general life. New videos added weekly. LIKE, COMMENT AND SUBSCRIBE TO OUR CHANNEL Follow us: Instagram:   / minitymaths   Twitter:   / minitymaths   Facebook:   / minitymaths   #2Dshapes #geometry #sumofangles #shapes #learnmath #mathhelp #mathsteachingresources #GCSE With thanks to Mixkit for sound effects and/or music https://mixkit.co/