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Web Results

en.wikipedia.org/wiki/Perpendicular

Therefore, in Euclidean

www.khanacademy.org/math/geometry-home/analytic-geometry-topic/parallel-and-perpendicular/v/perpendicular-lines

Sal determines which pairs out of a few given linear equations are

www.khanacademy.org/math/geometry-home/analytic-geometry-topic/parallel-and-perpendicular/e/line_relationships

Given the equation of two lines in a variety of forms, determine if they are equal,
... Analytic

www.mathsisfun.com/definitions/perpendicular-lines.html

www.ixl.com/math/geometry/slopes-of-parallel-and-perpendicular-lines

Fun math practice! Improve your skills with free problems in 'Slopes of parallel
and

quatr.us/math/geometry/perpendicular.htm

May 31, 2016

www.ixl.com/math/geometry/construct-a-perpendicular-line

Fun math practice! Improve your skills with free problems in 'Construct a

www.ixl.com/math/geometry/equations-of-parallel-and-perpendicular-lines

Fun math practice! Improve your skills with free problems in 'Equations of parallel
and

www.wyzant.com/resources/lessons/math/geometry/lines_and_angles/parallel_and_perpendicular

... and

www.math-aids.com/Geometry/Parallel_Lines/

These

More Info

www.khanacademy.org

Sal constructs a

www.mathopenref.com

... right angles'. A line is perpendicular to another if they meet at 90 degrees. ...
relationship. For more on this, see

www.mathopenref.com

How to determine if