1:31 Key Skill - Calculate a bearing with parallel lines.
Dr Frost demonstrates exactly how to calculate a bearing using parallel-line angle rules.
Angles in parallel lines and bearings
Use angles at parallel lines to work out bearings
3 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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5:36 GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules (2026/27 exams)
Crisp, clear walkthrough of alternate, corresponding and allied angle rules on parallel lines.
10:42 Angles: Parallel Lines - Corbettmaths
Corbettmaths explains alternate, corresponding and co-interior angles with worked exam-style examples.