The orientation of electron pairs and the shape of molecule are different in

The reason for V shape of water molecule→ In "H2O , the central atom 'Oxygen' undergoes sp3 hybridisation. The 4-pairs of electrons [2B.P's + 2L.P's] are oriented at the four corners of tetrahedron.→ Lone pairs donot contributes shape for molecule, but they effect the shape of the molecule. Only bond pairs gives the shape towards the molecule. And hence the shape is Angular but not tetrahedral.