cophy.tex

\documentclass{standalone}

\usepackage{tikz}
\usetikzlibrary{arrows}
\usetikzlibrary{arrows.meta}

\makeatletter
\pgfarrowsdeclare{center*}{center*}
{
  \pgfarrowsleftextend{+-.5\pgflinewidth}
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfarrowsrightextend{4.5\pgfutil@tempdima}
}
{
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfsetdash{}{+0pt}
  \pgfpathcircle{\pgfqpoint{4.5\pgfutil@tempdima}{0bp}}{4.5\pgfutil@tempdima}
  \pgfusepathqfillstroke
}

\pgfarrowsdeclare{centero}{centero}
{
  \pgfarrowsleftextend{+-.5\pgflinewidth}
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfarrowsrightextend{4.5\pgfutil@tempdima}
}
{
  \pgfutil@tempdima=0.4pt%
  \advance\pgfutil@tempdima by.2\pgflinewidth%
  \pgfsetdash{}{+0pt}
  \pgfpathcircle{\pgfqpoint{4.5\pgfutil@tempdima}{0bp}}{4.5\pgfutil@tempdima}
  \pgfusepathqstroke
}
\makeatother

\begin{document}

\begin{tikzpicture}[line width=0.75mm,scale=0.5]
\draw[blue] (0,0) -- (10,10);
\draw[blue] (4,0) -- (2,2);
\draw[blue] (8,0) -- (4,4);
\draw[blue] (12,0) -- (14,2);
\draw[blue] (16,0) -- (8,8);
\draw[red] (1,0) -- (11,10);
\draw[white,-center*] (9,8) -- (9,8);
\draw[red,-centero] (17,0) -- (9,8);
\draw[white,-center*] (15,2) -- (15,2);
\draw[red,-centero] (13,0) -- (15,2);
\draw[red] (7,3) -- (14,3);
\draw[red,arrows={Latex[scale=1]-}] (10,3) -- (14,3);
\draw[red] (10,0) -- (7,3);
\draw[white,-center*] (5,4) -- (5,4);
\draw[red,-centero] (9,0) -- (5,4);
\draw[white,arrows=-center*] (3,2) -- (3,2);
\draw[red,arrows=-centero] (4,1) -- (3,2);
\node[red, rotate=135] at (4,1) {\Huge\textsf{\textbf{x}}};
\draw[red] (18,0) -- (17,1);
\draw[red,center*-] (16,1) -- (17,1);
\end{tikzpicture}

\end{document}