its very good at balancing
It is formaldehyde in which carbon atom is sp2 hybridized so it is a triangular molecule with bond angles of 1200 .
It has a triangular planar geometry.
square planar
CO32- is trigonal planar, bond angles are 1200
it was designed such as to be stable and look special. wide triangular base gives stability
The shape would tend to be trigonal pyramidal. An example would be ammonia, NH3.
... are straight lines where two planar surfaces meet.
Formaldehyde has a nonpolar trigonal planar molecule.
square planar
Trigonal planar
trig planar
planar