Question 47
A regular hexagonal prism $ABCDEF A'B'C'D'E'F'$ has the edge $AB = 12$ and the height $AA' = 12\sqrt{3}$. Let $N$ be the midpoint of the edge $CC'$.
a.
Prove that the lines $BF'$ and $ND$ are perpendicular.
b.
Find the distance between the lines $BF'$ and $ND$.

a.
Prove that the lines $BF'$ and $ND$ are perpendicular.
b.
Find the distance between the lines $BF'$ and $ND$.
