Slicing a 3D Figure

The video tutorial explains how to determine the two-dimensional shape formed by slicing a three-dimensional figure. The instructor presents a question about slicing a 3D figure and provides four answer choices. The video guides viewers through analyzing each choice, focusing on slicing a right rectangular pyramid parallel to its base to form a rectangle. The tutorial emphasizes understanding the geometry of slicing and the resulting shapes.

Explain why slicing a right rectangular pyramid through three faces results in a triangle.

What is the significance of slicing a 3D figure parallel to the base?