111 年國中教育會考 數學科 第 21 題

\overset{\frown}{AC}+\overset{\frown}{AD}=\overset{\frown}{AB}，\overset{\frown}{AE}+\overset{\frown}{AF}=\overset{\frown}{AB}

\overset{\frown}{AC}+\overset{\frown}{AD}=\overset{\frown}{AB}，\overset{\frown}{AE}+\overset{\frown}{AF}\ne\overset{\frown}{AB}

\overset{\frown}{AC}+\overset{\frown}{AD}\ne\overset{\frown}{AB}，\overset{\frown}{AE}+\overset{\frown}{AF}=\overset{\frown}{AB}

\overset{\frown}{AC}+\overset{\frown}{AD}\ne\overset{\frown}{AB}，\overset{\frown}{AE}+\overset{\frown}{AF}\ne\overset{\frown}{AB}