Question

name two planes that intersect at $overleftrightarrow{cd}$. plane abc plane abf plane efg plane ghd plane bfg plane aeh

Explanation:

Step1: Recall plane - line intersection concept

In a 3 - D figure, the intersection of two planes is a line. We need to find two planes that share the line $\overleftrightarrow{CD}$.

Step2: Analyze the cube's planes

Looking at the cube, plane $ABCD$ and plane $CDHG$ share the line $\overleftrightarrow{CD}$. Among the given options, plane $ABC$ (which is part of the larger plane $ABCD$) and plane $GHD$ share the line $\overleftrightarrow{CD}$.

Answer:

plane ABC, plane GHD