% complile with »pdflatex«
\documentclass[tikz,convert=pdf2svg]{standalone}
\begin{document}
 \begin{tikzpicture}
  \pgfmathsetmacro{\DB}{2.59};
  \pgfmathsetmacro{\DE}{1};
  \coordinate (A) at (0,1.83);
  \coordinate (B) at (-\DB,0);
  \coordinate (C) at (\DB,0);
  \coordinate (D) at (0,0);
  \coordinate (E) at (-\DE,0);
  \coordinate (F) at (\DE,0);
  \draw (A) -- (B);
  \draw (A) -- (C);
  \draw (A) -- (D);
  \draw (A) -- (E);
  \draw (A) -- (F);
  \draw (B) -- (C);
  \draw (A) +(90:0.2) node{$a$};
  \draw (B) +(-135:0.25) node[anchor=base]{$b$};
  \draw (C) +(-45:0.25) node[anchor=base]{$c$};
  \draw (D) +(-90:0.3) node[anchor=base]{$d$};
  \draw (E) +(-90:0.3) node[anchor=base]{$e$};
  \draw (F) +(-90:0.3) node[anchor=base]{$f$};
 \end{tikzpicture}
\end{document}