How to denote perpendicular symbol(⟂) in LaTeX?

If two straight lines are at an angle of 90° to each other, then both straight lines are perpendicular to each other. This perpendicular symbol consists of a horizontal bar and a vertical bar.

\documentclass{article}
\begin{document}
  $$ p \perp q $$ 
  $$ a \: \bot \: b $$ 
\end{document}

Output :

If you look at the program above, you can see that the \prep command is used to represent perpendicular symbols. And \: has been used for space.

Many times, not perpendicular symbols are used, in which case the \not\prep command is used.

\documentclass{article}
\begin{document}
  $$ p \not\perp q $$ 
\end{document}

Output :

One request!

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