Exactly one plane in each case.
Skew Lines. :)
Two walls or a wall and floor of a room intersecting.
2
wateva
Yes, two planes have intersected.
One.
Two lines in two intersecting planes can be parallel, intersecting, or skew.
Skew Lines. :)
the answer would have to be skew
A line, or intersecting planes.
Intersecting planes!
yes
Two walls or a wall and floor of a room intersecting.
A line. Unless the two planes are the same, in that case a plane.
2
wateva
Yes, two planes have intersected.