Graphics Scripts in Tex with TikZ and PGF
=========================================
I'm editing a presentation about drawing a regular heptadecagon with a
compass and a straightedge. Of course I want to draw shapes in my
documents. Fortunately, packages exists that allow you to draw them
and you don't need a floating OLE(Object Linking and Embedding)  object like 
in LibreOffice. In Wikibooks, you can find a pretty good tutorial[1] on TeX
and LaTex. Chapter 7 of the book is about creating graphics. If you want
really good stuff don't use the first thinf you see. Section 4 PGF/TikZ
is for professionals, and it allows the editor of a document to write a
script inside a markup doucument written in an "ancient" matkup language.
The package to use is named "tikz", and you add it using

  usepackage{tikz}

Then you can define nodes and coordinates and draw lines and arcs.
More details about the package and libraries can be found at 

  https://en.wikibooks.org/wiki/LaTeX/PGF/TikZ

If you want to learn even more about TikZ/PGF including about writing scrips, 
you can scroll to the bottom of the page, and find the link https://tikz.dev
One useful library I use is called "tikzmath". I have added it using the
directive

  \usetikzlibrary[math]

To learn about it, choose Libraries from the left sidebar. then choose
Math Library. You will find there[2] a programing language with loops and
"if" statements and trigonometric functions and more...

Following is a little sample from my document:

\begin{tikzpicture}
  \tikzmath{
    \radius=6;
    \xCoord=\radius * cos(360/17);
    \yCoord=\radius * sin(360/17);
    \orgX=0;
    \orgY=0;
  }
  \coordinate (org) at (\orgX,\orgY);
  \node (O) at (\orgX-0.1,\orgY){O};
  \coordinate (pointA) at (\radius,0);
  \node (A) at (\radius+0.1,0){A};
  \coordinate (pointB) at (360/17:\radius);
  \node(B) at (\xCoord,\yCoord+0.1){B};
  \draw (org) -- (pointA);
  \draw (pointA) arc (0:360/17:\radius);
  \draw (pointB) -- (org);
  \draw [very thick] (pointA) -- (pointB);
  \draw (pointB) -- (\xCoord, 0);
  \node (C) at (\xCoord, -0.14){C};
\end{tikzpicture}
 



[1] https://en.wikibooks.org/wiki/LaTeX
[2] https://tikz.dev/library-math