Geometry

Question Analysis

This question involves identifying the edges that are skew to AD within the given prism. The main focus is on applying the definition of skew lines.

 

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

CG and EF are skew to AD.

CG is skew to AD because these lines are in different planes (BCGF and ADHE) and do not have any point of intersection. Similarly, EF is as well.

 

The other edges are not skew to AD:

AE & AB: AE, AB and AD are intersecting lines. They share a common point A.

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