Question

the diagram below is an oblique, or slanted, rectangular prism. not all angles shown are 90°. name two planes that intersect but arent necessarily perpendicular.

Explanation:

In a rectangular prism, planes that share an edge intersect. We can choose non - perpendicular intersecting planes by looking at adjacent non - right - angled faces. For example, plane $LMNO$ and plane $MNIJ$ share the edge $MN$ and are not necessarily perpendicular as it's an oblique prism.

Answer:

Plane $LMNO$ and plane $MNIJ$