The first pair forms a 90° angle therefore the lines are perpendicular.
The second lines are straight that it's obviously clear they will never meet meaning they are parallel
the third lines are neither perpendicular nor parallel.
Answer:
1. perpendicular
2. parallel
3. neither
Explanation:
The first set of lines are perpendicular because they intersect each other at a right angle.
The second set of lines are parallel because they never cross.
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