\documentclass[12pt,a4paper]{report}
\usepackage{amsmath, amsthm, amscd, amsfonts, amssymb, graphicx, color, subfigure}
\usepackage{float}
\usepackage{multirow}
\usepackage{tikz}
\usepackage{pgfplots}
\tikzstyle{vertex}=[circle,draw,inner sep=0pt,minimum size=5pt]
\newcommand{\vertex}{\node[vertex]}
\usepackage[table]{xcolor}
\usepackage{multirow}
\usepackage[backref,colorlinks=true]{hyperref}
\tikzstyle{vertex}=[circle,draw,inner sep=0pt,minimum size=5pt]
\usetikzlibrary{decorations.markings}
\tikzset{middlearrow/.style={decoration={markings,mark=at position 0.5 with{\arrow{#1}}},postaction={decorate}}}
\makeatletter
\providecommand{\tabularnewline}{\\}
\makeatother

\begin{document}
\begin{figure}[!ht]
\centering
\begin{tikzpicture} 
\vertex (1) at (0,0)[label=above:]{};
\vertex (2) at (2,0) [label=left:]{};
\path 
(1) edge (2)
;
\end{tikzpicture}
%\caption{ 
%$ اسم شکل $}
%\label{1.2}
\hspace*{10mm}
\begin{tikzpicture} 
\vertex (1) at (0,0)[label=above:]{};
\vertex (2) at (2,0) [label=left:]{};
\path
(1) edge (2)
;
\end{tikzpicture}
%\caption{ 
%$ اسم شکل $}
%\label{1.3}
%55کپشن و لیبل هر دو ؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟
\end{figure}
\end{document}