University of Georgia
University of Georgia: Extended Concurrencies of a Triangle
This site is an extended activity on point concurrency in triangles. The page goes through an exploration with the Napoleon Point and the Fermat Point. The site requires the use of GSP.
University of Georgia
University of Georgia: Perpendicular Bisectors Are Concurrent Proof
This site gives the proof that the three perpendicular bisectors of the sides of a triangle are concurrent.