tikz-pgf
I'm on overleaf doing some homework with latex and part of it includes adding a picture of this triangle on the right side of the paper. I know I have to use tikz but when I try and research it myself, I get bombarded with different answers that are not exactly what I'm looking for. Please help!
Something like this is made with the libraries decorations.text and arrows.meta together with the correspondent options
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.text,calc,arrows.meta}
\begin{document}
\begin{tikzpicture}
\coordinate (O) at (0,0);
\draw (O) circle (2.5);
\draw (O) circle (1.5);
\draw (O) circle (0.5);
\draw[decoration={text along path,reverse path,text align={align=center},text={Wee}},decorate] (0.6,0) arc (0:180:0.6);
\draw[decoration={text along path,reverse path,text align={align=center},text={There is a way?}},decorate] (1.6,0) arc (0:180:1.6);
\draw[decoration={text along path,reverse path,text align={align=center},text={Should be here any!}},decorate] (2.6,0) arc (0:180:2.6);
\begin{scope}[xshift=6cm]
\coordinate (O) at (0,0);
\draw[fill=red!30] (O) circle (2.8);
\draw[fill=green!40] (O) circle (2);
\draw[fill=yellow!70] (O) circle (1.2);
\draw[fill=blue!45] (O) circle (0.4);
\draw[decoration={text along path,reverse path,text align={align=center},text={xxx}},decorate] (0.5,0) arc (0:180:0.5);
\draw[decoration={text along path,reverse path,text align={align=center},text={yyy}},decorate] (1.3,0) arc (0:180:1.3);
%\draw[decoration={text along path,reverse path,text align={align=center},text={Should be here any!}},decorate] (2.1,0) arc (0:180:2.1);
\draw[decoration={text along path,reverse path,text align={align=center},text={Hello, how are you?}},decorate] (2.9,0) arc (0:180:2.9);
\end{scope}
\draw[line width=2mm,>={Triangle[length=3mm,width=5mm]},->] (2.6,0) -- (3.8,0);
\end{tikzpicture}
\end{document}
Result
Or you can simplify the code a bit by using loops (\foreach)
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.text,calc,arrows.meta}
\begin{document}
\begin{tikzpicture}
\coordinate (O) at (0,0);
\foreach \j in {1,...,3} \draw (O) circle (3.5-\j);
\foreach \k/\text in {0/Should be here any!,1/There is a way?,2/Wee} \draw[decoration={text along path,reverse path,text align={align=center},text={\text}},decorate] (2.6-\k,0) arc (0:180:2.6-\k);
\begin{scope}[xshift=6cm]
\coordinate (O) at (0,0);
\foreach \k in {1,...,4}\pgfmathparse{12*\k} \draw[fill=red!\pgfmathresult] (O) circle (3.6-0.8*\k);
\foreach \k/\text in {0/{Hello, how are you?},1/,2/yyy,3/xxx} \draw[decoration={text along path,reverse path,text align={align=center},text={\text}},decorate] (2.9-0.8*\k,0) arc (0:180:2.9-0.8*\k);
\end{scope}
\draw[line width=2mm,>={Triangle[length=3mm,width=5mm]},->] (2.6,0) -- (3.8,0);
\end{tikzpicture}
\end{document}
A fragile frames helps:
\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{arrows}
\usetikzlibrary{positioning}
\usetikzlibrary{matrix}
\begin{document}
\begin{frame}[fragile]
\begin{center}
\begin{tikzpicture}
\matrix (m) [matrix of math nodes,row sep=3em,column sep=4em,minimum width=2em]
{
E & E \\
P & P \\};
\path[-stealth]
(m-1-1) edge node [left] {$\pi$} (m-2-1)
edge node [above] {$\psi$} (m-1-2)
(m-2-1.east|-m-2-2) edge node [below] {}
node [above] {$\bar{\psi}$} (m-2-2)
(m-1-2) edge node [right] {$\pi$} (m-2-2);
\end{tikzpicture}
\end{center}
\end{frame}
\end{document}
Best Answer
For fun, here is a short code with
pst-eucl, which works well withxelatex: