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\begin{enumerate}

\item ���̕���\,\fbox{\mathstrut~~~~~~}\,�ɓ��Ă͂܂錾�t�܂��͎��������Ȃ����B

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\begin{enumerate}
\item �}�ɂ�����$\angle \,a$\,,\,$\angle \,b$\,,\,$\angle \,c$��$\triangle \mathrm{ABC}$��\,\fbox{~~~\ajMaru{1}~~~}�Ƃ����B

\item �}�ɂ�����$\angle \,b$��$\angle \,d$��\,\fbox{~~~\ajMaru{2}~~~}\,�Ƃ����B

\item �}�ɂ�����$\angle \,e$��$\triangle \mathrm{ABC}$��\,\fbox{~~~\ajMaru{3}~~~}\,�Ƃ����C$\angle \,c$���s�p�̂Ƃ�$\angle \,e$��\,\fbox{~~~\ajMaru{4}~~~}\,�ł���B
�܂�$\angle \,e=$\,\fbox{~~~\ajMaru{5}~~~}\,�����藧���C���̂��Ƃ����t�ŕ\���Ɓu�O�p�`��\,\fbox{~~~\ajMaru{3}~~~}\,��\,\fbox{~~~\ajMaru{6}~~~}\,�ɓ������B�v�ƂȂ�B

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\vspace{2mm}
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\hline
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\ajMaru{3} & \color{white}{�O�p}  & \ajMaru{4} & \color{white}{�݊p} \\[-8pt]
         &               &          &               \\
\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
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\hline
         & \multicolumn{3}{@{}c@{}|@{}}{} \\[-8pt]
\ajMaru{6} & \multicolumn{3}{@{}c@{}|@{}}{\color{white}{����ƂƂȂ荇��Ȃ�$2$�̓��p�̘a}} \\[-8pt]
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\hline
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\vspace{2mm}
\item ���̐}�ɂ�����$\angle \,x$�̑傫�������߂Ȃ����B
�܂��ǂ����Ă��̊p�x�ɂȂ�̂��}�`�̐������g���Đ������Ȃ����B�K�v�ł���ΐ}�ɐ����ɕK�v�ȋL�������������Ă��ǂ��B

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\end{enumerate}

\end{document}

