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Can someone help me understand/visualize why the two true/false questions below are false? I thought they were true.

True or False 2. Two lines perpendicular to a third line are parallel. CORRECT ANSWER: false

I'll respond quickly!

EDIT: Deleted one because I figured it out after typing it in!

  • 0
    well, that had be true only in context of euclidean geometry @ silver2011-09-29

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To clarify here is a picture in 3-Denter image description here

  • 0
    Nice diagram!!!2011-11-01
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As others have answered in the comments, this is only true in the plane, not in 3D space.