The question asks to identify two planes that intersect at line segment CB in the provided rectangular prism diagram.

Looking at the prism:

• CB is a vertical edge of the prism, connecting points C (top left) and B (bottom left).
• To find two planes that intersect along this edge, we need to identify planes that include CB as a common line.

Let's consider the planes that contain CB:

1. Plane GCB: This plane includes points G, C, and B and forms one of the side faces of the rectangular prism.
2. Plane ABC: This plane includes points A, B, and C, forming the base of the prism.

These two planes intersect at CB, making the correct answer:

• Plane GCB and Plane ABC.

So, the first option, "Plane GCB and Plane ABC", is the correct choice.

Would you like more details or explanations? Here are 5 related questions you might find helpful:

1. What is the definition of a plane in geometry?
2. How can you identify intersecting planes in a three-dimensional shape?
3. What are the other edges of the rectangular prism where two planes intersect?
4. Can two planes intersect in more than just a line in three-dimensional space?
5. What is the difference between a line and a plane in geometric terms?

Tip: In geometry, when identifying planes, think of them as flat surfaces that extend infinitely in all directions through at least three non-collinear points.