Ideal Bond Angles

linear

180

trigonal planar

120

bent

less than 120

tetrahedral

109

trigonal pyramidal

less than 109

bent (2 lone pairs)

even less than 109

trigonal bipyramid

120 and 90

seesaw

less than 120 and 90

t-shape

less than 90

linear (3 lone pairs)

180

octahedral

90

square pyramid

less than 90

square planar

90

t-shape (3 lone pairs)

less than 90

linear (4 lone pairs)

180