Perpendicular Bisectors

A perpendicular bisector is a straight line that cuts through the middle of two points (or a line) at a $90\degree$ angle.

We can construct the perpendicular bisector using a ruler and compasses.

Always ensure you use the correct equipment, you will always need a sharp pencil.

When you follow the method as described, you will have the circles drawn on your diagram, which you may think we don't need anymore.

In an exam, the examiner is looking for these construction lines so they can see that you have done it correctly.

So never erase your construction lines!