Question

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what notation is used to represent the distance from point a to b?
\\(\overline{ab}\\)
\\(ab\\)
\\(\overleftrightarrow{ab}\\)
\\(a - b\\)

Explanation:

In geometry, the distance between two points A and B is represented by the length of segment AB, denoted as \(AB\) (without a bar, which represents the segment itself). The other notations are incorrect: \(\overline{AB}\) is the segment, \(\overleftrightarrow{AB}\) is the line through A and B, and \(A-B\) is a subtraction, not distance.

Answer:

AB