If l,m,n are three lines such that l||m and n⊥l, prove that n⊥m.

1.	If l,m,n are three lines such that l\|\|m and n⊥l, prove that n⊥m.
Answer» If l,m,n are three lines such that l\|\|m and $n ⊥ l$ , prove that $n ⊥ m$ .

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