# Find the centre of a circle…

…or Perpendicular bisection of a chord on a circle!

I am not a great lover of rulers for measurement and prefer the use of a compass, especially when making very intricate measurements like the distance between two rotating cylinders. A little known method that I use to find the centre of a circle is to use the perpendicular bisection of a chord on a circle….cor bit of a mouthful…..the diagram below will give you a clue.

By: Jezza Bear

**More:** continued here