A straight line

"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.
- Euclid.

See also: Straight

References in classic literature ?
Mudge, who was at the rudder, kept in a straight line, and by a turn of his hand checked the lurches which the vehicle had a tendency to make.
I knew that the island was not so large but that I could easily find the sea if I did but move in a straight line, but there came the difficulty as there was no way in which I could direct my course and hold it, the sun, of course, being always directly above my head, and the trees so thickly set that I could see no distant object which might serve to guide me in a straight line.
To me this vast ivory-ribbed chest, with the long, unrelieved spine, extending far away from it in a straight line, not a little resembled the hull of a great ship new-laid upon the stocks, when only some twenty of her naked bow-ribs are inserted, and the keel is otherwise, for the time, but a long, disconnected timber.
It is to be almost inclosed by massive stone piers, one of which will extend into the sea over three thousand feet in a straight line.
The pair of legs that carried him were rickety, and there was a bias in his gait which inclined him somewhat to the left of a straight line.
The fact is," replied the Distressed One, "it is five thousand leagues, a couple more or less, from this to the kingdom of Kandy, if you go by land; but if you go through the air and in a straight line, it is three thousand two hundred and twenty-seven.
One immediately perceived three long parallel streets, unbroken, undisturbed, traversing, almost in a straight line, all three cities, from one end to the other; from North to South, perpendicularly, to the Seine, which bound them together, mingled them, infused them in each other, poured and transfused the people incessantly, from one to the other, and made one out of the three.
Be it so," replied the cardinal; and walking in a straight line he went to the wall, at the foot of which they all four arrived at the same instant.
To coast round their southern points would be a wide circuit; whereas, could they force their way through them, they might proceed in a straight line.
The doctor took an accurate design of these mountains, which form four distinct ridges almost in a straight line, the northernmost being the longest.
The distance in a straight line to Buenos Ayres is very nearly five hundred British miles.
It drove along in a straight line, incapable of guidance.