two sets of parallel lines
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two sets of parallel lines
two intersecting sets of parallel lines
set of parallel lines
which two lines are parallel
what are two parallel lines
which two lines would be parallel lines
show that these two lines are parallel
two pair of parallel lines
which shows two parallel lines
what makes two lines parallel
dist between two parallel lines
what makes 2 lines parallel
two sets of parallel lines, two intersecting sets of parallel lines, set of parallel lines, which two lines are parallel, what are two parallel lines, which two lines would be parallel lines, show that these two lines are parallel, two pair of parallel lines, which shows two parallel lines, what makes two lines parallel, dist between two parallel lines, what makes 2 lines parallel