A molecule ${\mathrm{AX}}_2$ has two lone pairs over A. Its shape is

It is given around "A" 4 pairs( 2 B.P's and 2 L.P's)are there. 
$4\sigma$- bonds as 2 L.p's are considered as $2\sigma$ bonds. So, ${\mathrm{sp}}^3$hybridization
with two L.P. 
Angular shape / V - shape is molecular geometry.