Water molecules are symmetric, with mirror symmetry across two planes. Their structure is not constant but varies with local conditions, however the angle between the two hydrogen oxygen bonds is often quoted as 104.52 degrees. (This bent structure is responsible for many of waters interesting properties.)
Some related links:
http://www.lsbu.ac.uk/water/molecule.html
http://en.wikipedia.org/wiki/Water_model
The molecular shape of SCl6 is octahedral.
Tetrahedral However, it is not a uniform tetrahedron, but biased in favour of 'H' .
The molecular shape name for C3H8 is a tetrahedron.
Parent Shape: Trigonal bipyrimidal Actual shape: Trigonal Planar
V-shape
A compound that does not have a bent molecular shape is carbon dioxide (CO2). It has a linear molecular shape due to the arrangement of the three atoms in a straight line.
The molecular shape of a magnesium hydride molecule is linear. Magnesium has a +2 charge, while hydride has a -1 charge, resulting in a linear molecular shape.
The molecular shape of CIF2 is linear. This is because there are only two atoms bonded with the central atom, which results in a linear molecular geometry.
Isomers
F2 has a linear shape.
The shape of SF4 is Sea Saw
The bond angle in silicon disulfide (SiS2) is approximately 105 degrees, and the molecular shape is bent/angular.