Parallel and Perpendicular Lines
⭐ MasteredParallel lines never meet and stay the same distance apart, like train tracks. Perpendicular lines cross at a right angle.
The lines on a notebook page are parallel.
All about Parallel and Perpendicular Lines
Parallel lines run in the same direction and always stay the same distance apart. They never meet, no matter how far they go, like the rails of a railway track. Parallel lines are often marked with arrows on diagrams.
Perpendicular lines cross each other at a right angle of 90°. Think of the corner of a window frame or the lines of a plus sign. Knowing these terms helps you describe shapes and recognise squares and rectangles.
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Real-life uses of Parallel and Perpendicular Lines
- Building railway tracks, roads and fences
- Drawing grids and graph paper
- Designing tiles and bricks that fit together neatly
Frequently asked questions about Parallel and Perpendicular Lines
Can perpendicular lines be parallel?
No. Perpendicular lines meet at a right angle, while parallel lines never meet.
Are the opposite sides of a rectangle parallel?
Yes. Opposite sides of a rectangle are parallel, and adjacent sides are perpendicular.
How can I tell lines are parallel on a grid?
Check that they go the same number of squares across for each square up, so the gap stays the same.