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\usepackage{hyperref}
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\usepackage{booktabs}
\usepackage{longtable}
\usepackage{subfigure}
\usepackage{subfloat}
\usepackage{float}
\usepackage{subfig}
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\usepackage[top=3.5cm,right=3.5cm,bottom=2.5cm,left=2.5cm]{geometry}                 
\usepackage{xepersian}
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\graphicspath{{images/}}
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\begin{document}


\begin{figure}[!htpb]
\centering
\subfloat[20 درجه]{%
\includegraphics[scale=0.4]{203t}	\label{fig:203t}%
}\\
\subfloat[25 درجه]{%
\includegraphics[scale=0.4]{253t}	\label{fig:253t}%
}\\
\subfloat[30 درجه]{%
\includegraphics[scale=0.4]{303t}\label{fig:303t}%
}
\caption{ نمودار توزیع شدت }
\end{figure}

\begin{figure}
 \ContinuedFloat
  \centering
\subfigure[50 درجه]{%
\includegraphics[scale=0.4]{503t\label{fig:503t}%
}\\
\subfigure[55 درجه]{%
\includegraphics[scale=0.4]{553t}\label{fig:553t}%
}\\
\subfigure[60 درجه]{%
\includegraphics[scale=0.4]{603t}\label{fig:603t}%
}
\caption{( نمودار توزیع شدت (ادامه}
\end{figure}

\begin{figure}
 \ContinuedFloat
  \centering
\subfigure[65 درجه]{%
\includegraphics[scale=0.4]{653t}\label{fig:653t}%
}//
\subfigure[70 درجه]{%
\includegraphics[scale=0.4]{703t}\label{fig:373t}%
}

\caption{( نمودار توزیع شدت (ادامه}
\label{fig:theory2}
\end{figure}
\end{document}