Parallel lines
What Parallel lines means in Mathematics GCSE, as defined for AQA, OCR, Pearson Edexcel.
Definitions of Parallel lines
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Reference: Pearson Edexcel
When a transversal line crosses them, alternate and corresponding angles are equal, while co-interior angles sum to 180°.
Lines that have equal gradients, so if two equations have the same m but different c, they are parallel.
Two different lines with the same gradient never meet, so they are parallel.
Distinct straight lines in the same plane that remain the same perpendicular distance apart and never meet.
Lines in a plane that are always the same distance apart and never intersect.
Coplanar straight lines that do not meet when extended.
Topics that use Parallel lines
- Graphs (AQA GCSE)
- Mensuration and calculation (AQA GCSE)
- Properties and constructions (AQA GCSE)
- Angles (OCR GCSE)
- Algebra - Graphs (Pearson Edexcel GCSE)
- Geometry and measures - Properties and constructions (Pearson Edexcel GCSE)
Related terms
Using Parallel lines in the exam
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