16:23 Perpendicular Lines - GCSE Higher Maths
Clear UK Higher walkthrough of perpendicular gradients and finding a perpendicular line's equation, with chapters.
Equations of perpendicular lines
Find the equation of a line that is perpendicular to a given line or gradient
4 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.
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4 shown 16:23 
18:29 Parallel and Perpendicular Lines
Maths Genie covers parallel and perpendicular lines thoroughly with clear worked exam-style examples.
10:34 Equations of Perpendicular Lines - GCSE
Dr Frost builds perpendicular gradients from scratch through to harder equation questions, with chapters.
5:20 GCSE Maths - Perpendicular Lines (2026/27 exams)
Concise UK video on the gradient product rule and starting to find perpendicular line equations.