Answer:
use a compas
Explanation:
1)Put the point on the point of the segment
2)draw a curve on both sides of the line(top and bottom) a little past the middle
- I like to just draw half a circle with the middle of it intersecting the segment
3)repeat for the other point
4)connect the center of both x shaped drawings with a straight line.
Boom, the straight line is the bisector,