GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules

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*** WHAT'S COVERED ***
1. When alternate, corresponding, and allied angle rules apply.
2. General properties of the angles formed in that scenario.
3. The three main angle rules for parallel lines:
* Alternate angles are equal.
* Corresponding angles are equal.
* Allied angles add up to 180°.
4. How to recognise these angle relationships even when the shapes are rotated or flipped.
5. Applying these rules to calculate unknown angles in diagrams involving parallel lines.

*** EXAM BOARD INFO ***
This video is suitable for maths courses around the world.
KS3 - All on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course
A-level - All on your course

*** CHAPTERS ***
0:00 Intro: Angle rules
0:13 When These Rules Apply: Parallel Lines & Transversals
0:38 Four Important Properties of the Angles Formed
1:49 Using Properties to Find Missing Angles
2:19 Rule 1: Alternate Angles (Z Shape)
2:43 Rule 2: Corresponding Angles (F Shape)
3:05 Rule 3: Allied / Co-interior Angles (C Shape)
3:51 Recognising Rules in Different Orientations
4:11 Worked Example: Finding Missing Angles

*** PLAYLISTS ***










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