Eric goes for a walk every night after work. a map of the route has a scale of 1: 20,000, in cm. if eric walked 1.2 kilometers on monday night, how many cm is the route on the map?

We convert from km to cm.
 1.2 km = 120 000 cm.
 If the map is made on a scale of 1: 20,000, in cm
 So we have to divide 120,000 / 20,000 to know how many centimeters that distance on the map is represented.
 Finally the answer is 6 centimeters. That is, 1.2 km equals 6 centimeters on the map

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 : )