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Hellow all guy.help me How to draw in 3 dimensions ?enter image description here

Yim Phearun
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    You could use TikZ or PStricks. Generally, you should put a small code here that shows you've tried something. – Sebastiano Oct 05 '18 at 09:09
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    While you wait for an answer to this question, can you go back to your previous ones and look if the answers solve your problems and accept them, if they do? For example https://tex.stackexchange.com/questions/446271/how-to-draw-intersect-of-line-sphere has such a nice answer, but you never accepted an answer to any of your questions :( – samcarter_is_at_topanswers.xyz Oct 05 '18 at 09:17
  • Besides what's been said in the comments above, note that the diagram in your post can easily be constructed in 2D, for instance with tikz. – Thev Oct 05 '18 at 09:47

1 Answers1

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In a comment above, I suggested that it could be done constructed with a 2D vector diagram.

Here's a sample in Tikz (I'll leave you to fill in the finer details yourself):

\documentclass{article}
\usepackage{tikz}
\usepackage{xcolor}
\usepackage{amsmath}

\begin{document}

\begin{tikzpicture}
\draw [<->,gray!50!black] (0,5) node[above]{$z$} -- (0,0) --(-3,-4) node[left]{$x$};
\draw [->,gray!50!black] (0,0)--(5,0) node[right]{$y$};
\draw[thick] (0,0)--(4,0)--(2.25,-3)--(-2.25,-3)--(0,0);
\draw[thick] (2.25,-3)--(2.25,1.5)--(0,0);
\draw[dashed] (-2.25,-3)--(2.25,1.5)--(4,0);
\end{tikzpicture}

\end{document}

Output:

enter image description here

Thev
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