\begin{tikzpicture}[auto,scale=0.7,transform shape]
	% x node set with absolute coordinates
	\node (i) at (0,0) [label=left:$i$,point];
	\node (c1) at (-2,-2) [label=left:$c_1$,point];
	\node (c2) at (2,-2) [label=right:$c_2$,point];
	\node (p) at (0,2) [label=left:$p$,point];
	\coordinate [label=above:$f_X$] (ep) at (0,3);
	\coordinate [label=below:$f_X$] (ec1) at (-2,-3);
	\coordinate [] (ec2) at (2,-3);
	% Directed edge
	\path (i) edge node[right] {$X$} (p);
	\path (i) edge node[above] {$\bcancel{X}$} (c1);
	\path (i) edge node[above] {$X$} (c2);
	
	\draw[dotted] (p) -- (ep);
	\draw[dotted] (c1) -- (ec1);
	\draw[dotted] (c2) -- (ec2);
	% Bidirected edge
	%\path[bidirected] (A) edge[bend left=60] (C);
	%\node at ($(1)!.5!(2)$) {\ldots};
\end{tikzpicture}
