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GR.14.1

Estimate and classify angles

Estimate and classify angles

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
Grade 1–3 Core 🇬🇧 UK

GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules (2026/27 exams)

Cognito 907K views

Corbettmaths quick guide to estimating the size of an angle by eye.

2:25
Grade 1–3 Core 🇺🇸 US

Types of Angles (Acute, Obtuse, Right, Straight, Reflex) | Math with Mr. J

Math with Mr. J 554K views

Clear walkthrough of every angle type: acute, obtuse, right, straight and reflex.

7:46
Grade 1–3 Core 🌐 Other

Math Antics - Angle Basics

mathantics 6.5M views

Friendly, thorough intro to angles and their names, ideal for building the basics.