Question

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

Answer 1

how is naming an ocean different from naming a lake?

Answer 2

one is infinite and the other just a piece

Answer 3

thanks

Answer 4

A line through points A and B is denoted \[\Large \overset{\longleftrightarrow}{AB}\] (this line continues on forever in both directions, ie it's infinitely long)

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A line segment through points A and B is denoted \[\Large \overline{AB}\] (this line is finitely long)