Correct. $\displaystyle{\stackrel{{\leftrightarrow}}{{{A}{B}}}}{\mid}{\mid}{\stackrel{{\leftrightarrow}}{{{C}{D}}}}\usepackage{cmbright}\Huge\$ and $\displaystyle{\stackrel{{\leftrightarrow}}{{{E}{F}}}}{\mid}{\mid}{\stackrel{{\leftrightarrow}}{{{G}{H}}}}\usepackage{cmbright}\Huge\$ . So there are two pairs of parallel lines.