| Answer | Crossword Clue |
|---|---|
| BOUNDARY | Line between two cities |
| AXIS | Line between two poles |
| GAPPER | Line drive between two outfielders |
| ARC | Not the shortest line between two points |
| AXIOM | "A straight line is the shortest distance between two points," for instance. |
| SEAPLANES | Transportation between some Alaskan cities |
