SOLUTION: What is AB with the line on top of it?

Question 1121345: What is AB with the line on top of it?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

is a way to refer to the line segment with endpoints A and B. Without the overline,

refers to the measure of the line segment

Usage example: Let's say you have two line segments

and

and you know that the measures of these two line segments are the same. Then you can write

which means "line segment AB is congruent to line segment CD" or you could write

which means "the measure of line segment AB is equal to the measure of line segment CD". However, it would be wrong to say

. In other words the statement "the line segment AB is equal to the line segment CD" is nonsense.

John

My calculator said it, I believe it, that settles it

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