Answer :
To bisects a segment is divide into two equal parts the segment. To bisects a segment you measure the total lenght and then divide that measure into 2.
Example: You have a line of 15 feet to bisect that line you divide the measure into 2:
[tex]\frac{15ft}{2}=7.5ft[/tex]Then, you put a line at 7.5ft of endpoints of the line:
Line n bisects line m