A bisector is a line which cuts another line exactly in half. A perpendicular bisector cuts a line exactly in half and intersects it at a right angle. It can be constructed using a ruler and pair ...

Ah, classic...and relatively easy. In one sentence, draw the perpendicular bisector of any two distinct rods to the circle and they will intersect at the center.

Learn more about bisecting lines and angles with this BBC Bitesize Maths article. For students between the ages of 11 and 14.