## segment bisector

### a line, segment, or ray that cuts a segment into two equal parts

A segment bisector is a line, ray, or line segment that divides a given line segment into two equal parts. In other words, it is a geometric tool that helps to mark the midpoint of a segment.

To construct a segment bisector, a compass is typically required. The compass is used to mark two points on the line segment that are equidistant from the endpoints. Then, the compass is opened to the same distance, and arcs are drawn above and below the line segment such that they intersect at two points. Finally, a straight line is drawn through these two points, which bisects the original line segment into two equal parts.

Segment bisectors are used in many different mathematical contexts. For instance, they play an essential role in geometry, as they help to identify the location of the circumcenter of a triangle. They are also used in construction projects to divide lines or angles into equal pieces. Additionally, segment bisectors are helpful in solving equations, especially when working with distance formulas.

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