Hello! I'm having trouble with my proof.
Centroid of a triangle ABC: G
Orthocentre of a triangle ABC: H
Circumference of a triangle ABC (circle passes though the vertices, A, B, C): O
Question: Prove that G, H and O of any triangle lie on any line.
Proofs are my Achilles heel. So far the only progress I have made is:
http://img12.imageshack.us/img12/7818/geometry.jpgAny help would be greatly appreciated.