To construct the perpendicular bisector of a given line segment.

Explanation

Taking `A` as center and radius more than `1/2AB` draw arcs on top and bottom of `AB`

Taking `B` as center and radius same as before, draw arcs on top and bottom of `AB`.



Let the point where arcs intersect on top of `AB` be `P` and the point below be `Q` Join `PQ`



Let `PQ` intersect `AB` at `M`. line `PMQ` is the required perpendicular bisector.