What is the intersection of two planes?

Question

help

Answer 1

When two planes intersect, they can do one of two things:

a) if they're parallel and there are any points in the intersection at all,

then the intersection has to be the whole plane.  

b) if they're parallel, they don't have to intersect at all.

c) if they're not parallel, the intersection will always be a straight line.

Most planes aren't parallel, so they'd intersect in a line.

Answer 2

Flying east/west or flying north/south?

If two planes intersect, they will probably crash.............

flying at 550 mph, would be tough to swerve....