\(=\overrightarrow{A B}+(\overrightarrow{A C}+\overrightarrow{A F})+\overrightarrow{A D}\)\(+\overrightarrow{A E}\)
\(=\overrightarrow{A B}+(\overrightarrow{A C}+\overrightarrow{C D})+\overrightarrow{A D}\)
\(+\overrightarrow{A E}[\sin c e \overrightarrow{A F}=\overrightarrow{C D}]\)
\(=\overrightarrow{A B}+\overrightarrow{A D}+\overrightarrow{A D}+\overrightarrow{A E}\)
\(=2 \overrightarrow{A D}+(\overrightarrow{A B}+\overrightarrow{A E})\)
\(=2 \overrightarrow{A D}+(\overrightarrow{E D}+\overrightarrow{A E})\)
\([\sin c e \overrightarrow{A B}=\overrightarrow{E D}\)
\(=2 \overrightarrow{A D}+\overrightarrow{A D}\)
\(=3 \overrightarrow{A D}\)
\(=3 (2 \overrightarrow{A O}) \quad[\text { since } O\) is the center
and \(\overrightarrow{A O}=\overrightarrow{O D}\)
\(=6 \overrightarrow{A O}\)