What Do Line Segments Mean in Elementary Math?

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When it comes to elementary math, "line segments" is a term that describes a very particular thing. Learn about what line segments mean in elementary math with help from an experienced mathematics educator in this free video clip.

Part of the Video Series: Elementary Math
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Video Transcript

I my name is Marija. I'm a mathematician and today I'm going to show you what line segments mean in math. And line segments mean exactly what they sound like, segments of lines or pieces of lines. So we're going to start by drawing a line which extends endlessly in both directions and a line segment is just going to be part of this line and it's going to have two boundaries. So we'll draw the first boundary on the left side and call it point A and another boundary on the right and we'll call this one point B. So now within my line that never ends I have a piece of it whose left hand boundary is A and whose right hand boundary is B and all of the points in between those two boundaries are part of my line segment. So the way that you name a line segment is you take its two endpoints, in my case A and B and we call it AB and you go ahead and signify it by drawing a little line segment right above it. So the portion of this line that lies between points and A and B is called line segment AB. It does stop, unlike the line which goes in both directions on the left hand side it stops at A, on the right hand side it stops at B but it does include every single point in between A and B. My name is Marija and I just showed you what a line segment is in math.


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