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Year 3 · Shapes & Geometry

Parallel and perpendicular lines

Parallel lines stay the same distance apart and never meet. Perpendicular lines cross at a right angle.

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How to do it

  1. Would the lines ever meet if extended? Never: parallel.
  2. Do they cross at a square corner? Yes: perpendicular.

Worked example

Railway tracks
Always the same distance apart
Parallel

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Lines can cross without being perpendicular.

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