This question already has an answer here:
How do I make a symbol for the length of a line or vector?
I intend the following notation: |AD| is the length of AD. I can't find this symbol anywhere. (When I use
shift+backslash in LaTeX, it gives a horizontal line).
For some reason the
\cdot also doesn't seem to work, when I write it down like this:
&|AD| \cdot |BD|& = ...
So can anyone please tell me what I am doing wrong?