perpendicular lines
nounUK /ˌpɜː.pənˈdɪk.jə.lə laɪnz/
US /ˌpɝː.pənˈdɪk.jə.lɚ laɪnz/
Perpendicular lines are two straight lines that meet at a perfect right angle.
The two walls of the room form perpendicular lines where they meet in the corner.
RELATED WORDS
OTHER MEANINGS
2. Lines that are at a 90-degree angle to a given surface or line.
The flagpole stands as perpendicular lines to the flat ground.
3. In math, lines whose slopes multiply to negative one.
The graph shows perpendicular lines crossing at the origin.
4. In everyday speech, lines that go straight up and down rather than side to side.
The stripes on the shirt are perpendicular lines running from top to bottom.