skew lines

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plural noun Geometry.

any lines in space that do not intersect and are not parallel.

QUIZ

GOOSES. GEESES. I WANT THIS QUIZ ON PLURAL NOUNS!

Test how much you really know about regular and irregular plural nouns with this quiz.

Question 1 of 9

Which of the following nouns has an irregular plural form?

Origin of skew lines

First recorded in 1950–55

Granted, James is in an office in the Pentagon, and not on the front lines.
Pentagon Doesn’t Know How Many People It’s Killed in the ISIS War|Nancy A. Youssef|January 7, 2015|DAILY BEAST
The next phase of the trial consists of vaccinating Ebola workers on the front lines.
The Race for the Ebola Vaccine|Abby Haglage|January 7, 2015|DAILY BEAST
As it turns out, though, cartoon curmudgeons get the best, most ridiculous lines.
‘Downton Abbey’ Review: A Fire, Some Sex, and Sad, Sad Edith|Kevin Fallon|January 5, 2015|DAILY BEAST
If he did, it could be a sign that our politicians are ready to resume genuine policy-making across party lines.
Christie Blames Parents for Bad Economy|Monica Potts|January 3, 2015|DAILY BEAST

Your general reaction runs along the lines of: “When will these geezers give it up and go for a mall walk or something?”
The World’s Toughest Political Quiz|Jeff Greenfield|December 31, 2014|DAILY BEAST
Fully two miles away, on the south side of the ravine, were the sepoy lines, and another group of isolated bungalows.
The Red Year|Louis Tracy
Some peculiar lines between these contracted brows gave a character of ferocity to this forbidding and sensual face.
Checkmate|Joseph Sheridan Le Fanu
He thus decoyed them away, and the fortunate couple were enabled to reach the British lines under cover of the darkness.
The Red Year|Louis Tracy
Still, monsieur, I am willing to proceed upon the lines which would appear to be more agreeable to yourself.
St. Martin's Summer|Rafael Sabatini
If we are to have a real education along lines of expression we must begin with the "content," or cause, of expression.
Expressive Voice Culture|Jessie Eldridge Southwick