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In a plane, line N is parallel to line O, line O is parallel to P, and line L is perpendicular to line N. Which must be true?

User CEarwood
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If in a plane, line N is parallel to line O, line O is parallel to line P, and line L is perpendicular to line N, then line N must also be parallel to line P and line L must also be perpendicular to line P. If two coplanar lines are parallel, then any line perpendicular to one must be perpendicular to the other. Hope this helps!

User SchrodingersCat
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