Geometry Definition of a Line
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What's My Line
Definition of a Line

 

 Now math types may be a little mad at me about now.

 
 You see, I haven't been using the word "line" exactly right.
 
 A real line is a lot like a ray,
 but it doesn't just go on forever in one direction.
 It goes on forever in both directions ...
 

 

 
 The screen or a piece of paper still doesn't go on forever,
 so we put arrowheads at each end of the line part we draw.
 Don't forget that a line goes on forever.
 
 These are all lines:

 

 

   copyright 2005 Bruce Kirkpatrick

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