Answer
$\vec {DA}=\vec {CB}$
$\vec {AB}=\vec {DC}$
$\vec {DE}=\vec {EB}$
$\vec {CE}=\vec {EA}$
Work Step by Step
$\vec {DA}=\vec {CB}$ and $\vec {AB}=\vec {DC}$ having unique directions and magnitudes.
$\vec {DE}=\vec {EB}$ and $\vec {CE}=\vec {EA}$ having equal directions and magnitudes.
$\vec {DE}=\vec {EB}$ because both point towards northeast and having same magnitude whereas $\vec {CE}=\vec {EA}$ because both point towards northWwest and having same magnitude
