Perpendicular
From Encyclopedia of Mathematics
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to a given straight line (plane)
A straight line intersecting that straight line (plane) at right angles.
Comments
Two lines intersecting at right angles are also said to be orthogonal or perpendicular (cf. also Perpendicular straight lines).
How to Cite This Entry:
Perpendicular. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Perpendicular&oldid=14970
Perpendicular. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Perpendicular&oldid=14970