How to plot the plane x+z=0

Question

How to plot the plane x+z=0.

I took four points on x+z=0 plane to form a rectangle. Is this a correct approach?

\documentclass[tikz,border=10mm]{standalone}
    \usepackage{tikz}
    \usepackage{tikz-3dplot}
\begin{document}
\tdplotsetmaincoords{60}{120} % Set the viewpoint angles

\begin{tikzpicture}[scale=1.5,tdplot_main_coords]
    % Define points for the rectangle on the plane
    \coordinate (A) at (2,2,-2);
    \coordinate (B) at (2.2,-2,-2.2);
    \coordinate (C) at (-2.2,-2,2.2);
    \coordinate (D) at (-2.2,2,2.2);

    % Draw the rectangle
    \draw (A) -- (B) -- (C) -- (D) -- cycle;

    % Draw the axes
    \draw[thick,-&gt;] (0,0,0) -- (2.5,0,0) node[anchor=north east]{$x$};
    \draw[thick,-&gt;] (0,0,0) -- (0,2.5,0) node[anchor=north west]{$y$};
    \draw[thick,-&gt;] (0,0,0) -- (0,0,2.5) node[anchor=south]{$z$};
\end{tikzpicture}
\end{document}

Welcome to TeX.SX! Your code draws a plane, and if you adapt your coordinates to be all 2 or -2 (currently there are some 2.2), then it would be correct. In general, the question "is this a correct approach" may be opinion based. Therefore, it is better to ask a more specific question. Maybe have a look at pgfplots and this related question: Draw the plane x+y=1 in three dimensions in pgfplots. — dexteritas, Nov 02 '23 at 10:38

How to plot the plane x+z=0

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