Geometry - post 1

I'm probably not that great at blogging about math subjects, but let's give it a try.

I haven't been in geometry since high school, so having a bit of a refresher was a good thing. Here is some vocab from the first week.

A line is different from a line segment, because a line can go on forever, while a line segment is just a segment of that line.
                         
       line     <----->                                   line segment       -----
                               AB                                                                                                        AB

A                           B                                                               A                           B
<------------>                                       .-------------.


A ray is a subset of a line.

ray    ----->
               AB

A                     B
.----------->

I found this video from Khan Academy just talking about the basic of geometry. I thought it made things easy to understand =)