How is naming a line segment different from naming a line?
helppp

Question

How is naming a line segment different from naming a line? 
helppp

jim_thompson5910 · Answer

Say you have two points P and Q

The line that passes through P and Q is written as $ \overleftrightarrow{PQ} $

The line segment that passes through P and Q is written as $ \overline{PQ} $

anonymous · Answer

ooh thankss

jim_thompson5910 · Answer

np

paxpolaris · Answer

in the segment P and Q  HAVE to be the endpoints....

whereas in the line P and Q can be any two points oon the line

anonymous · Answer

thank youu c:

jim_thompson5910 · Answer

good point, I should have said 

The line segment that connects P and Q is written as $ \overline{PQ} $

anonymous · Answer

how do you do that symbol on top of them.. lol

jim_thompson5910 · Answer

on this site? to do that I'm using the equation editor or you can type 

\overline{PQ} 

and surround it with \ (   and  \ )   ... delete the spaces

to get this  $ \overline{PQ} $

jim_thompson5910 · Answer

to write out $ \overleftrightarrow{PQ} $ on this site, you type

\overleftrightarrow{PQ}

and surround it in \ ( and \ ) ... delete the spaces