This determines the gradient of the required line. Use B\((6,3)\) and \(m\). The perpendicular bisector passes through the midpoint of AC. This determines the point on the required line.

This line is the perpendicular bisector. The point of intersection of ... i.e the action as shown in slides 3 and 4 needs to be repeated on the right-hand side. Image caption, The two new arcs ...