in geometry, two lines or planes (or a line and a plane), are considered perpendicular (or orthogonal)
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Diksha Shrivastava answered this
perpendicular lines - two lines are said to be perpendicular if the angle between them measure 90 degree . for example - two edges of blackboard are perpendicular to each other .
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Aryaman Kalia answered this
two lines that interset with each other at the angle of 90 degree is called is called perpendicular lines
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Swati Sehgal answered this
When two lines intersect at a point it is called perpendicular lines...
