Line l is parallel to line m. Prove that line n,which is perpendicular to line l at A is also perpendicular to line m at B
Mark M.
answered • 06/20/18
Mathematics Teacher - NCLB Highly Qualified
In parallel lines cut by a transversal, same side interior angles are supplementary
Angle at A is 90°
Angel at B is 90°
n ⊥ m
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