# How to make a tetragonal pyramid?

I have the following code for an octahedron. I need to remove the below part of that and write A, B, C, D, E for each vertex. I do not know how to do that. Your help will be appreciated.

$\begin{tikzpicture}[z={(-.3cm,-.2cm)}, % direction z gets projected to; can also change x,y % use cm to specify non-transformed coordinates line join=round, line cap=round, % makes the corners look nicer every node/.style = {inner sep=1pt, font=\scriptsize} ] \draw ( 0,2,0) node[above] {} -- (-2,0,0) node [left] {} -- (0,-2,0) node[below] {} -- ( 2,0,0) node[right] {} -- ( 0,2,0) -- ( 0,0,2) node[below left] {} -- (0,-2,0) (2,0,0) -- (0,0,2) -- (-2,0,0); \draw[dashed] (0,2,0) -- (0,0,-2) -- (0,-2,0) (2,0,0) -- (0,0,-2) -- (-2,0,0); \end{tikzpicture}$


In fact, we have a tetrahedron that its base is a triangle, but I need the base as a rectangle, a tetragonal pyramid with letters on each vertex.

• What would happen, if you'd replace those { } by {someText}? // Kindly apply this checklist to turn your code into something useable here: tex.meta.stackexchange.com/questions/228/… . // Why do you put the tikypicture environment into math-mode? // Are you familiar with the tutorials in tikz.dev ? Jan 7 at 9:26

Something like this?

\documentclass[border=10pt]{standalone}
\usepackage{tikz}

\begin{document}
\begin{tikzpicture}[
z={(-.3cm,-.2cm)},
line join=round,
line cap=round,
every node/.style={
inner sep=1pt,
font=\scriptsize
}
]

\draw
(0,2,0) node[above] {A} --
(-2,0,0) node[left] {B} --
(0,0,2) node[below] {C} --
(2,0,0) node[right] {D} -- cycle
(0,0,2) -- (0,2,0);
\draw[dashed]
(0,2,0) -- (0,0,-2) node[below] {E}
(2,0,0) -- (0,0,-2) -- (-2,0,0);

\end{tikzpicture}
\end{document}


• Thank you very much. If I want to color rectangle BCDE, how can I do that? Jan 7 at 17:41
• @user118746 If you want to color the rectangle, you could add \fill[red!25] (-2,0,0) -- (0,0,2) -- (2,0,0) -- (0,0,-2); before the first \draw command. Take a look into the tutorials at tikz.dev for more information about how to draw lines and areas with TikZ. Jan 7 at 17:51