1. The problem statement, all variables and given/known data In triangle ABC, with vertices A(0,a), B(0,0) and C(b,c) prove that the right bisectors of the sides meet at a common point (the circumcentre). 2. Relevant equations Midpoint(x1 + x2 / 2 , y1 + y2 / 2) Length of a Line 3. The attempt at a solution I was thinking of using the Midpoints to prove that Midpoint AD = Midpoint BE = Midpoint CF.....is this the right way?