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Tap every pair of lines that could be skew

Exercise and reference answers

Questions
  1. Items
    1. Text
      Two lines in space that never meet and are not parallel
      Matches the category
      Yes
    2. Text
      Two lines lying in different planes, never meeting
      Matches the category
      Yes
    3. Text
      Two parallel lines
      Matches the category
      No
    4. Text
      Two lines crossing at a point
      Matches the category
      No
    5. Text
      Two lines in the same plane that never meet
      Matches the category
      No
    Category
    Could be a pair of SKEW lines

Explanation

Skewness rules out both meeting and being parallel so it can only happen in three dimensions. Source: syllabus Maths Part II, Ch 11 Three Dimensional Geometry.
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