[closed] Winkel in dreidimensionaler Skizze

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\documentclass{scrartcl}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{tikz}
\usetikzlibrary{decorations.markings}
\usetikzlibrary{quotes,angles}
\usetikzlibrary{babel}
\tikzset{
  xyz/.style={x={(-.5cm,-.5cm)},y={(1cm,0cm)},z={(0cm,1cm)}}
}
\begin{document}
    \begin{tikzpicture}[xyz,scale=2]
        %Koordinatensystem
        \draw[thick,->] (-4,0,0) -- (4,0,0) node[left]{$x$};
        \draw[thick,->] (0,-4,0) -- (0,4,0) node[right]{$y$};
        \draw[thick,->] (0,0,-4) -- (0,0,4) node[above]{$z$};
        %Nullpunkt
        \draw[fill=black] (0,0,0) circle(1pt);
        %Punkt
        \draw[fill=black] (1,2,-3) circle(1pt) node[right]{$Q(x,y,z)$};;
        %Verbindungsvektoren
        \draw[->] (0,0,0) -- (1,2,-3) node[left,midway]{$\overrightarrow{OQ}=\begin{pmatrix} x \\ y \\ z \end{pmatrix}$};
        \draw[dashed] (0,0,0) -- (1,2,0);
        \draw[dashed] (1,2,-3) -- (1,2,0);
        \draw[dashed] (0,2,0) -- (1,2,0);
        %Winkel
        \path (0,0,0) coordinate (d) (1,2,0) coordinate (e)(1,2,-3) coordinate (f)
        pic[dashed,"$\cdot$", draw=black, -, angle eccentricity=0.5, angle radius=.5cm]
        {angle=d--e--f};
        \path (0,0,0) coordinate (d) (0,2,0) coordinate (e)(1,2,0) coordinate (f)
        pic[dashed,"$\cdot$", draw=black, -, angle eccentricity=0.5, angle radius=.75cm]
        {angle=d--e--f};
    \end{tikzpicture}
\end{document}
 
 
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