Triangle Centres

The centroid, orthocentre, incentre and circumcentre of a triangle are quite well known. Thousands of other centres have been classified at ETC, the encyclopedia of triangle centres. We focus on the few triangle centres which are most significant in solving geometry problems, including the Gergonne and Nagel points.

Additional supplementary material is available for downloading free at the Highperception front page. Viewing the DVD without doing the exercises will be of limited value.

The presenter and authors

This DVD is presented by Dr Ceri Fiddes who is Head of Department at Stowe School in Buckinghamshire, England. She was the UK deputy leader at the International Mathematical Olympiads in 2006 and 2007. She is co-author of the commentary with Dr Geoff Smith of the University of Bath. He has been the UK IMO leader since 2002.

Licences

This material is extremely compact, and we do not expect it to be viewed at a single sitting. Rather an able student will want to watch a short section of it, and then do relevant exercises downloaded from the Highperception home page.

The price given above is for a single user. If you need a school site licence, just indicate this when you add the product to your basket. The cost of DVD with a school site licence is only double the price for a DVD with a single user licence.

DVD viewing

This DVD is designed for viewing on a computer screen. If you want to try to view it on a TV, see the link marked `details' in the Highperception home page.