Perry observes the opposite, parallel walls of a room. In how many lines do the planes containing the walls intersect?

2
0
1
3

Question

Perry observes the opposite, parallel walls of a room. In how many lines do the planes containing the walls intersect?

 2
 0
 1
 3

danjs · Answer

each wall is a plane in 3-space

danjs · Answer

they are parallel to each other

help_people · Answer

oh ok 3? i htought it was 2 for some reason. Wonder why I was thinking htat.

danjs · Answer

what , 3 lines of intersection of the planes?

danjs · Answer

the walls are parallel, a plane will contain each wall

those will never intersect

danjs · Answer

like take the lines

x=1 and x=2,    and let z be any value,   you have two parallel planes

help_people · Answer

oh so 3 is nto the asnwer

help_people · Answer

so 2 was rgigt?

danjs · Answer

2 planes have the possibility of intersecting. If they do , the intersection is a Line. 

Here the planes are parallel, the two opposite walls of a room

those have 0 lines of intersections

help_people · Answer

so the answer is 0

danjs · Answer

2 planes cant intersect at more than 1 line,   try to do that

danjs · Answer

2 planes are either parallel, or they intersect in a line

help_people · Answer

can they intersect at 1?

help_people · Answer

so the asnwr is 2? @DanJS