This is a picture of an perpendicular bisector
A perpendicular Bisector is a line that divides another line segment in half and meets at right angle.
-Equal line segments are hash marks.
How to make a Perpendicular Bisector
1. Open compass to just over half way of a line segment.
2. Sharp point at "A" Make an Ark
3. Sharp Point at "B" make and Ark
4. With ruler join the two intections