Question

the diagram below is an oblique, or slanted, rectangular prism. not all angles shown are 90°. name two planes that are parallel.

Explanation:

Step1: Recall prism - plane property

In a prism, opposite faces are parallel planes.

Step2: Identify opposite faces

For the given rectangular prism, plane $OPQR$ and plane $STUV$ are opposite faces.

Answer:

Plane $OPQR$, Plane $STUV$