The answer depends on southwest of WHAT and since you have not bothered to provide that crucial bit of information, it is not possible to give a more useful answer.
there is 9 planes of symmetry in a cube
There are 31 planes of existence in Buddhist belief
Two planes intersect at a line. The line where they intersect pertains to both planes. In the same manner, if infinitely many planes intersect each other at the same line, then that line pertains to the infinitely many planes.
it has 5 planes of symmetry
it has 5 planes: the base and 4 sides.
Southwest is adding wifi to more planes all the time. They don't expect to have wifi on all flights until 2012.
737
Boeing
No, Southwest does not allow dogs on their planes, unless you have special needs.
Southwest Airlines currently only operate Boeing 737 airplanes. There are several different versions of this airplane though, so the seat count can vary.
No not really, it was the planes and rivers that were more responsible.
There are way too many planes in real life. No one can tell how many planes are in real life.
9 planes in Cube 3 Planes in Cuboid
the southwest
There is about 5 southwest states
planes can take -84C & planes fuel can take -48C
Yes he made many planes Yes he made many planes