3 Answers

(Vertical line) The vertical bar (|) is a character with various uses in mathematics, where it can be used to represent absolute value,.

11 years ago. Rating: 5
Comment this answer Add new comment

Vertical lines are the ones which go up and down. The ones which go sideways are horizontal lines

11 years ago. Rating: 2
Comment this answer Add new comment

Here's an example:

11 years ago. Rating: 1
Comment this answer Add new comment