About This Lesson
The 19th in Mr Barton's Autograph Video tutorial series. This week we look at our second Circle Theorem - this classic Cyclic Quadrilateral Theorem. After quickly constructing and demonstrating the theorem, we also have a look at a nice little extension question involving parallelograms... Below the video you will find an option to download it and play it on a larger screen, or by clicking on the web-link you can see all the videos in this series.