Question

a rectangular prism is sliced parallel to its base.
what is the shape of the cross section?
the cross section is a

Explanation:

Step1: Recall the base of a rectangular prism

A rectangular prism has a rectangular base (since it's a prism with rectangular faces).

Step2: Analyze the slice direction

The prism is sliced parallel to its base. When a 3D figure is sliced parallel to its base, the cross - section will have the same shape as the base.

Step3: Determine the cross - section shape

Since the base of a rectangular prism is a rectangle, the cross - section formed by a slice parallel to the base will also be a rectangle.

Answer:

rectangle