1. ``That which lies evenly between its extreme points.'' --Euclid. ``The shortest line between two points.'' --Chauvenet. ``A line which has the same direction through its whole length.'' --Newcomb.[Websters].
1. ``That which lies evenly between its extreme points.'' --Euclid. ``The shortest line between two points.'' --Chauvenet. ``A line which has the same direction through its whole length.'' --Newcomb.[Websters].