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\begin{document}
\twocolumn[%
  \begin{center}
    \Large\bf $2$�N~�O�p�`�E�l�p�`
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    \underline{\hspace{1cm}}�N\underline{\hspace{1cm}}�g\underline{\hspace{1cm}}��
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\begin{enumerate}

\item ���̕���\,\fbox{\mathstrut~~~~~~}\,�ɓ��Ă͂܂錾�t�������Ȃ����B
\begin{enumerate}
\item �����Ȑ}�`�ɂ����Ă͑Ή�����\fbox{~~~\ajMaru{1}~~~}\,�̒�����\fbox{~~~\ajMaru{2}~~~}\,�̑傫�����������Ƃ�������������B

\item �O�p�`�̍���������\fbox{~~~\ajMaru{3}~~~}\,�A\fbox{~~~\ajMaru{4}~~~}\,�A\fbox{~~~\ajMaru{5}~~~}\,��$3$������B

\item ���鐫�����������Ƃ��C�킩���Ă��邱�Ƃ�\fbox{~~~\ajMaru{6}~~~}\,�A�������悤�Ƃ��邱�Ƃ�\fbox{~~~\ajMaru{7}~~~}\,�A�����̂��Ƃ��ؖ��Ƃ����B

\item �񓙕ӎO�p�`�ŁC������������2�̕ӂ�����p��\fbox{~~~\ajMaru{8}~~~}\,�A\fbox{~~~\ajMaru{8}~~~}\,�ɑ΂���ӂ��ӁA��ӂ̗��[�̊p��\fbox{~~~\ajMaru{9}~~~}\,�Ƃ����B

\item ���p�O�p�`�̍��������ɂ�\fbox{~~~\ajMaru{10}~~~}\,��\fbox{~~~\ajMaru{11}~~~}\,������B

\item �l�p�`�̌����������ӂ�\fbox{~~~\ajMaru{12}~~~}\,�C�����������p��\fbox{~~~\ajMaru{13}~~~}\,�Ƃ����B

%\item ���s�l�ӌ`�̐����ɂ�\fbox{~~~\ajMaru{14}~~~}\,�C\fbox{~~~\ajMaru{15}~~~}\,�C\fbox{~~~\ajMaru{16}~~~}\,�Ƃ�������������B
%
\item �l�p�`�����s�l�ӌ`�ɂȂ邽�߂ɂ͒�`�܂��́C$3$���鐫����\fbox{~~~\ajMaru{14}~~~}\,�����藧���C\fbox{~~~\ajMaru{15}~~~}\,�̂ǂꂩ�����藧�ĂΕ��s�l�ӌ`�ɂȂ�B

%\item \fbox{~~~\ajMaru{1}~~~}\,���������l�p�`�𒷕��`�Ƃ����B
%
%\item \fbox{~~~\ajMaru{1}~~~}\,���������l�p�`���Ђ��`�Ƃ����B
%
%\item �����`��\fbox{~~~\ajMaru{1}~~~}\,��\fbox{~~~\ajMaru{1}~~~}\,�̗����̐����������Ă���B

\end{enumerate}

\vspace{2mm}
\begin{tabular}{|c|c|c|c|}
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
\ajMaru{1} & \color{white}{��(����)} & \ajMaru{2} & \color{white}{�p} \\[-8pt]
         &               &          &               \\
\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
\ajMaru{3} & \multicolumn{3}{@{}c@{}|@{}}{\color{white}{$3$��}} \\[-8pt]
         & \multicolumn{3}{@{}c@{}|@{}}{} \\
\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
\ajMaru{4} & \multicolumn{3}{@{}c@{}|@{}}{\color{white}{$2$�ӂƂ��̊Ԃ̊p}} \\[-8pt]
         & \multicolumn{3}{@{}c@{}|@{}}{} \\
\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
\ajMaru{5} & \multicolumn{3}{@{}c@{}|@{}}{\color{white}{$1$�ӂƂ��̗��[�̊p}} \\[-8pt]
         & \multicolumn{3}{@{}c@{}|@{}}{} \\
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
\ajMaru{6} & \color{white}{����}  & \ajMaru{7} & \color{white}{���_} \\[-8pt]
         &               &          &               \\
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
\ajMaru{8} & \color{white}{���p}  & \ajMaru{9} & \color{white}{��p} \\[-8pt]
         &               &          &               \\
\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
\ajMaru{10} & \multicolumn{3}{@{}c@{}|@{}}{\color{white}{�Εӂ�$1$�s�p}} \\[-8pt]
         & \multicolumn{3}{@{}c@{}|@{}}{} \\
\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
\ajMaru{11} & \multicolumn{3}{@{}c@{}|@{}}{\color{white}{�ΕӂƑ���$1$��}} \\[-8pt]
         & \multicolumn{3}{@{}c@{}|@{}}{} \\
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
\ajMaru{12} & \color{white}{�Ε�}  & \ajMaru{13} & \color{white}{�Ίp} \\[-8pt]
         &               &          &               \\
%\hline
%         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
%\ajMaru{14} & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
%         & \multicolumn{3}{@{}c@{}|@{}}{} \\
%\hline
%         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
%\ajMaru{15} & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
%         & \multicolumn{3}{@{}c@{}|@{}}{} \\
%\hline
%         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
%\ajMaru{16} & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
%         & \multicolumn{3}{@{}c@{}|@{}}{} \\
\hline
         & & \multicolumn{2}{@{}c@{}}{} \\[-8pt]
\ajMaru{14} & \color{white}{�t} & \multicolumn{2}{@{}c@{}}{} \\[-8pt]
         & & \multicolumn{2}{@{}c@{}}{} \\
\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
\ajMaru{15} & \multicolumn{3}{@{}c@{}|@{}}{\color{white}{$1$�g�̑Εӂ����s�œ�����}} \\[-8pt]
         & \multicolumn{3}{@{}c@{}|@{}}{} \\
\hline
\end{tabular}

\newpage

\item �ȉ��̐}�`�̒�`���L�����g���ĕ\���Ȃ����B
\begin{enumerate}
\item ���O�p�`$\mathrm{ABC}$
\item ���s�l�ӌ`$\mathrm{ABCD}$ (���s�̋L�����g���ĕ\���Ȃ���)
\item �����`$\mathrm{ABCD}$
\item �Ђ��`$\mathrm{ABCD}$
\end{enumerate}

\vspace{1mm}
\begin{tabular}{@{}|@{}c@{}|l|}
\hline
         & \hspace{70mm} \\[-8pt]
\,\,($1$)\,\, & \color{white}{$\mathrm{AB}=\mathrm{BC}=\mathrm{CA}$} \\[-8pt]
         & \\
\hline
         & \hspace{70mm} \\[-8pt]
($2$) & \color{white}{$\mathrm{AB}/\hspace{-0.5mm}/\mathrm{DC},\,\mathrm{AD}/\hspace{-0.5mm}/\mathrm{BC}$} \\[-8pt]
         & \\
\hline
         & \hspace{70mm} \\[-8pt]
($3$) & \color{white}{$\angle\,\mathrm{A}=\angle\,\mathrm{B}=\angle\,\mathrm{C}=\angle\,\mathrm{D}$} \\[-8pt]
         & \\
\hline
         & \hspace{70mm} \\[-8pt]
($4$) & \color{white}{$\mathrm{AB}=\mathrm{BC}=\mathrm{CD}=\mathrm{DA}$} \\[-8pt]
         & \\
\hline
\end{tabular}

\vspace{2mm}
\item �ȉ��̐}�`�̐������L�����g���ĕ\���Ȃ����B�������l�p�`�ɂ����Ă͑Ίp���̌�_��$\mathrm{O}$�Ƃ���B
\begin{enumerate}
\item $\mathrm{AB}=\mathrm{AC}$�̓񓙕ӎO�p�`$\mathrm{ABC}$
\item ���s�l�ӌ`$\mathrm{ABCD}$
\item �����`$\mathrm{ABCD}$
\item �Ђ��`$\mathrm{ABCD}$
\end{enumerate}

\vspace{1mm}
\begin{tabular}{@{}|@{}c@{}|l|}
\hline
         & \hspace{70mm} \\[-8pt]
\,\,($1$)\,\, & \color{white}{$\angle\,\mathrm{B}=\angle\,\mathrm{C}$} \\[-8pt]
         & \\
\hline
         & \hspace{70mm} \\[-8pt]
         & \color{white}{$\mathrm{AB}=\mathrm{DC},\,\mathrm{AD}=\mathrm{BC}$} \\[-8pt]
         & \\
\cline{2-2}
         & \hspace{70mm} \\[-8pt]
($2$) & \color{white}{$\angle\,\mathrm{A}=\angle\,\mathrm{C},\,\angle\,\mathrm{B}=\angle\,\mathrm{D}$} \\[-8pt]
         & \\
\cline{2-2}
         & \hspace{70mm} \\[-8pt]
         & \color{white}{$\mathrm{AO}=\mathrm{CO},\,\mathrm{BO}=\mathrm{DO}$} \\[-8pt]
         & \\
\hline
         & \hspace{70mm} \\[-8pt]
($3$) & \color{white}{$\mathrm{AC}=\mathrm{BD}$} \\[-8pt]
         & \\
\hline
         & \hspace{70mm} \\[-8pt]
($4$) & \color{white}{$\mathrm{AC}\,\bot\,\mathrm{BD}$} \\[-8pt]
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\hline
\end{tabular}

\begin{flushright}
�i����֑����j
\end{flushright}
%
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\item ���̐}��$\angle\,x$,\,$\angle\,y$�̑傫�������߂Ȃ����B

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         & \hspace{33mm} & \hspace{33mm} \\[-8pt]
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\item �}�̂悤��\,\,\,$\PARSQ\,\mathrm{ABCD}$�̑Ίp��$\mathrm{\mathrm{BD}}$��ɒ��_$\mathrm{A}$,\,$\mathrm{C}$���炻�ꂼ�ꐂ��������
��_�����ꂼ��$\mathrm{E}$,\,$\mathrm{F}$�Ƃ�$\mathrm{A}$��$\mathrm{E}$�C$\mathrm{C}$��$\mathrm{F}$�����т܂��B���̂Ƃ��l�p�`$\mathrm{AECF}$�����s�l�ӌ`�ɂȂ邱�Ƃ��ؖ����Ȃ����B

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\hline
\hspace{3mm}
\begin{tabular}{@{}r@{}c@{}l@{}}
�ؖ�)~~~\color{white}{$\triangle \mathrm{ABE}$} & \color{white}{��} & \color{white}{$\triangle \mathrm{CDF}$�ɂ�����} \\
\color{white}{$\angle\,\mathrm{AEB}$} & \color{white}{$=$} & \color{white}{$\angle\,\mathrm{CFD}=90^\circ$ (����) \hspace*{1mm}�c�c�c\ajMaru{1}}\hspace*{5mm} \\
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