To find the plane(s) parallel to plane LMQ, let's think about the location and direction of this plane.
Two planes are parallel if they do not intersect. We can see that plane LMQ does not intersect the plane represented by the left face of the figure, so they are parallel. This is the only plane that it does not intersect.
To name this plane, we can arbitrarily choose three points on that plane. One possible name can be KJP.
