Geometry

Question Analysis

This question involves the concept of skew lines within the context of a 3D figure. The main focus is on applying the definition of skew lines to determine which pairs of lines skew in the given triangular prism.

Key Concept Explanation:

Skew lines are defined as non-coplanar lines, meaning they do not lie in the same plane, and they do not intersect each other.

Option Analysis

The correct answer is C. The skew lines are CE and DF. They are in different planes and do not have any point of intersection.

The other options are incorrect:

Option A: AD is parallel to BF because AD and BF are opposite sides of the base and are coplanar and do not intersect.

Option B: AD and DF...