Triangle ABC has AB=5, BC=12 and AC=13. The perpendicular bisector of AC intersects the extension of AB at O. Then OC is

Triangle ABC has AB=5, BC=12 and AC=13. The perpendicular bisector of

1.	Triangle ABC has AB=5, BC=12 and AC=13. The perpendicular bisector of AC intersects the extension of AB at O. Then OC is
Answer» Triangle $A B C$ has $A B = 5,$ $B C = 12$ and $A C = 13.$ The perpendicular bisector of $A C$ intersects the extension of $A B$ at $O .$ Then $O C$ is