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\begin{enumerate}

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%%�Q�N�Q�w�����ԃe�X�g�}�`�҂P

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

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\begin{enumerate}
\item �}$1$�ɂ�����$\angle\, a$ ��$\angle c$�̈ʒu�ɂ���p��\fbox{~~~\ajMaru{1}~~~}��
�����C$\angle\, b$ ��$\angle\, f$�̈ʒu�ɂ���p��\fbox{~~~\ajMaru{2}~~~}�Ƃ����C$\angle\, b$ ��$\angle\, h$�̈ʒu�ɂ���p��\fbox{~~~\ajMaru{3}~~~}��
�����B

\item $0^\circ$���傫��$90^\circ$��菬�����p��\fbox{~~~\ajMaru{4}~~~}�Ƃ����C
$90^\circ$���傫��$180^\circ$��菬�����p��\fbox{~~~\ajMaru{5}~~~}�Ƃ����B

\item �}$2$�ɂ�����$3$�̊p$\angle\, a,\,\angle\, b,\,\angle\, c$��$\triangle \mathrm{ABC}$��\fbox{~~~\ajMaru{6}~~~}�Ƃ����B�܂�$\angle\, x$��$\triangle \mathrm{ABC}$��\fbox{~~~\ajMaru{7}~~~}�Ƃ����B

\item �}$2$�ɂ�����$\angle\, \mathrm{A}=90^\circ$�̂Ƃ���$\mathrm{BC}$��\fbox{~~~\ajMaru{8}~~~}�Ƃ����B

\item �O�p�`�̍���������$3$�ӁC\fbox{~~~\ajMaru{9}~~~}�C\fbox{~~~\ajMaru{10}~~~}�Ƃ���$3$�̏���������B

\end{enumerate}

\vspace{2mm}
\begin{tabular}{|c|c|c|c|}
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
\ajMaru{1} & \color{white}{�Β��p} & \ajMaru{2} & \color{white}{���ʊp} \\[-8pt]
         &               &          &               \\
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
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         &               &          &               \\
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
\ajMaru{5} & \color{white}{�݊p}  & \ajMaru{6} & \color{white}{���p} \\[-8pt]
         &               &          &               \\
\hline
         & \hspace{30mm} &    & \hspace{30mm}  \\[-8pt]
\ajMaru{7} & \color{white}{�O�p} & \ajMaru{8} & \color{white}{�Ε�} \\[-8pt]
         &               &          &               \\
\hline
         & \hspace{30mm} &          & \hspace{30mm} \\[-8pt]
\ajMaru{9} &  \color{white}{$2$�ӂƂ��̊Ԃ̊p} & \ajMaru{10} & \color{white}{$1$�ӂƂ��̗��[�̊p} \\[-8pt]
         &               &          &               \\
\hline
\end{tabular}

\vspace{2mm}
%%�}�`�҂Q
\item ���̐}�ɂ�����$\,\angle\, x\,$�C$\,\angle\, y\,$�̑傫�������߂Ȃ����B\ajMaru{3}�͓����Ȃ����B

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\ajMaru{3}~��$12$�p�`��$1$�̓��p�̑傫��

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\ajMaru{2} & $\angle\, x=~~~\color{white}{120^\circ}~~~~~~~~$ & \ajMaru{3} &  ~~~\color{white}{$150^\circ$}~~~~~~~~ \\[-8pt]
         &               &           &     \\
\hline
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%(3) & $\angle x=~~~~~~~~~~~~$   &  $\angle y=~~~60^\circ~~~~~~~~~~$ \\[-8pt]
%         &               &                \\
%\hline
\end{tabular}

\newpage

\item ����$\angle\, x$�̑傫�������߂Ȃ����B
�����������Ȃ����B���̂Ƃ��C�ǂ̐}�`�̐������g���ĉ������̂��킩��悤�ɏ����Ȃ����B
(�}�ɐV���ɐ������������Ă������B)

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\color{white}{$\mathrm{BC}$��������$\mathrm{AD}$�Ƃ̌�_��$\mathrm{E}$�Ƃ���B~~~~~~~~~~~~~~~~~~~} \\
\color{white}{�O�p�`�̊O�p�̐����ɂ��$\angle\, \mathrm{A}+\angle\, \mathrm{B}=\angle\,\mathrm{CED}$} \\
\color{white}{�]���� $\angle\,\mathrm{CED}=65^\circ +30^\circ =95^\circ$} \\
\color{white}{���l�� $\angle\,\mathrm{BCD}=\angle\,\mathrm{CED}+\angle\,\mathrm{D}$} \\
\color{white}{�]���� $\angle\,\mathrm{BCD}=95^\circ +20^\circ =115^\circ$} \\
\color{white}{����� $\angle\,x=115^\circ$} \\
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\vspace{2mm}
\item �O�p�`�̓��p�̘a��$180^{\circ }$�ł��邱�Ƃ𗘗p���āC
���̌܊p�`$\mathrm{ABCDE}$�̓��p�̘a��$540^{\circ }$�ɂȂ邱�Ƃ�������Ȃ����B
(�����Ŏg�p�������͎c���Ă������ƁB)

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\color{white}{���̐}�̂悤�ȑΊp���������ƁC�܊p�`�͎O�p�`$3$�ɕ����邱�Ƃ��ł���B}\\
\color{white}{�����$180^\circ\times 3=540^\circ$} \\
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\vspace{2mm}
\item ���s���̐����𗘗p���āC
$\triangle \mathrm{ABC}$�̓��p�̘a��$180^\circ$�ɂȂ邱�Ƃ�������܂����B
���������������Ȃ����B

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\vspace{3mm}
����$\mathrm{AB}$�ƕ��s�œ_$\mathrm{C}$��ʂ锼����$\mathrm{CD}$�������B

\vspace{2mm}
\hspace{-5mm}
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\color{white}{$\mathrm{AB}/\hspace{-1mm}/\mathrm{DC}$���$\angle\,a=\angle\,\mathrm{ACD}$(���s���̍��p�̐���)$\cdots$\ajMaru{1}} \\
\color{white}{���l��$\angle\,b=\angle\,\mathrm{DCE}$(���s���̓��ʊp�̐���)$\cdots$\ajMaru{2}} \\
\color{white}{�꒼����ɂł���p�Ȃ̂�} \\
\color{white}{$\angle\,c+\angle\,\mathrm{ACD}+\angle\,\mathrm{DCE}=180^\circ$$\cdots$\ajMaru{3}} \\
\color{white}{\ajMaru{1}�C\ajMaru{2}�C\ajMaru{3}���} \\
\color{white}{$\angle\,a+\angle\,b+\angle\,c=180^\circ$} \\
\color{white}{���̂��Ƃ��O�p�`�̓��p�̘a��$180^\circ$�ɂȂ�B}\\
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\end{enumerate}

\end{document}

