Parallel and Perpendicular Lines for 4th Grade
Two lines are parallel when they run in the same direction and never meet, and perpendicular when they cross at exactly 90 degrees. Both relationships are about the pair of lines, not about either line alone. The examples below cover both, with practice problems.
DETAILED EXPLANATION
Parallel lines never meet (same distance apart). Perpendicular lines form a 90° angle where they cross. Two lines can be parallel, perpendicular, or neither.
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
Do parallel lines ever intersect?
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Solutions:
Step 1: Apply the concept from the lesson above.
Step 2: Carry out the operation or reasoning.
Answer: No. Parallel lines never intersect.
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