What is the correct order of steps for bisecting segment ab?
a`draw a line from point c to point d.
b`keeping the compass the same width, place the compass on point b, and swing an arc above and below the segment.
c`place points c and d on the intersection of the arcs created above and below segment ab.
d`place the compass on point a, and open it wider than half the distance of the segment.
e`swing an arc above and below the segment.