52 > 43 + w is it a solution?
7 yes or no
4 yes or no
13 yes or no
9 yes or no

Is 8.50 an answer or no? ?

Skew lines(segments) are lines(segments) in 3 dimensions that do not intersect the given segment and are not parallel to it.  ae, bf, eg, and fh are your skew segments.  i hope that : )