What are Perpendicular Lines? Definition, Properties, Examples
https://www.splashlearn.com/math-vocabulary/geometry/perpendicular
WEBIn geometry, perpendicular lines are defined as two lines that meet or intersect each other at right angles ( 90 ∘). The term ‘perpendicular’ originated from the Latin word ‘perpendicularis,’ meaning a plumb line. If two lines AB and CD are perpendicular, then we can write them as AB ⊥ CD.
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