How to write these two symbols in LaTeX

Question

I know the Latex symbols are $\Delta$ but how to shade the Delta in Latex? Please help.

https://tex.stackexchange.com/a/471441/134144 might be helpful. — leandriis, May 14 '21 at 05:55
Also, https://tex.stackexchange.com/questions/14/how-to-look-up-a-symbol-or-identify-a-letter-from-a-math-alphabet-or-other-chara — Davislor, May 14 '21 at 05:57

score 19 · Accepted Answer · edited May 15 '21 at 04:53

19

\documentclass{article}
\usepackage{amssymb}
\usepackage{xcolor}


\begin{document}
    \begin{enumerate}
        \item \(\color{red}\blacktriangle\)
        \item \(\color{red}\blacktriangledown\)
    \end{enumerate}
\end{document}

That would give you

edited May 15 '21 at 04:53

wermos

5

answered May 14 '21 at 05:58

needle

913

Thanks a lot, great solution – Charlotte May 14 '21 at 06:12
6

This would look great on an elevator. – Giuseppe Negro May 14 '21 at 15:24

Davislor · Answer 2 · 2021-05-14T19:02:45.387

Here is a solution for LuaLaTeX or XeLaTeX:

\documentclass{article}
\tracinglostchars=3
\usepackage[svgnames]{xcolor}
\usepackage{newcomputermodern}
\newcommand\redtriangleup{\textcolor{Red}{\bigblacktriangleup}}
\newcommand\redtriangledown{\textcolor{Red}{\bigblacktriangledown}}
\begin{document}
[ \redtriangleup\redtriangledown ]
\end{document}

In PDFTeX, load \usepackage{stix} or \usepackage{stix2} instead of \usepackage{newcomputermodern}.

ETA: You can replace \bigblacktriangleup with \blacktriangleup and \bigblacktriangledown with \blacktriangledown as in needle’s answer, while using the same approach. Many more packages support these commands.

How to write these two symbols in LaTeX

2 Answers2