Bisect Line with Compass and Straight Edge

This examples shows how to divide a line into two equal parts using a compass and ruler.


  1. Start with a line with two end points.

    Step 1
  2. Draw an arc outward with a radius equal to the distance between the two points.

    Step 2
  3. Repeat this process with the other point. Label the two points where the arcs intersect.

    Step 3
  4. Draw a line between the two points and label where the line intersects the original line.

    Step 4

    We have finished dividing the line into two equal parts.

    Bisect Line Example