Circles - Cyclic Quadrilaterals - video

Author and programmer: Ron Barrow

A short video on the circle theorem - Opposite Angles in a Cyclic Quadrilateral add up to 180°

This video is embedded from my youTube channel and is part of my Circle Theorems Playlist


All pages and content are Copyright © R F Barrow, 2001 - 2016. All rights reserved.