Question

Name three places two planes could intersect

Answer 1

If two planes intersect, they intersect in a line. Two planes that do not intersect are called parallel. Given a plane and a line, there are three possibilities. The line and the plane intersect in a single point.

Answer 2

if the 2 planes are on top of each other they intersect everywhere. other than that 2 planes can only intersect in a line