It is a bisector.
A Segment Bisector
A line that intersects a segment at its midpoint bisects the segment.
I line that intersects a segment at its midpoint.
perpendicular bisector
bisector
It is called a bisector.
Such a line is called a perpendicular bisector.
It is a bisector.
A segment bisector is a line, ray, or segment that divides a segment into two equal parts. Examples include the perpendicular bisector of a line segment, which intersects the segment at its midpoint at a right angle, and a midpoint connector that connects the midpoints of two segments. Additionally, any line that passes through the midpoint of a segment and extends in both directions can also be considered a segment bisector.
A line that is perpendicular to the segment of a plane and passes through the midpoint.
Take a compass, extend it about 3/4 of the length of the segment. Then from one end of the segment, draw a 180 degree arc. From the other end draw another arc. Connect the points where the arcs intersect. Where the line intersects with the segment is the midpoint of the segment. That is how you bisect a segment to find the midpoint - geometrically.
The line that divides a segment into two congruent segments is called the perpendicular bisector. This line intersects the segment at its midpoint and forms right angles with the segment, ensuring that the two resulting segments are equal in length.