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GR.10.3

Angles in regular and non-regular polygons

Calculate interior and exterior angles in regular and non-regular polygons

5 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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Grade 3–7 Core 🇬🇧 UK

Angles in Polygons - GCSE Maths

1st Class Maths 450K views

Thorough GCSE walkthrough of interior and exterior angles for both regular and irregular polygons.

Jump to 2:07Interior angle sum 8:40Interior angles of regular polygons 11:39Exterior angles of regular polygons 14:06Interior angles plus exterior angles formula

Grade 3–6 Core 🇬🇧 UK

Angles in Polygons - Interior & Exterior Angles | GCSE Maths Tutor

The GCSE Maths Tutor 312K views

Clear GCSE tutorial on interior and exterior angle techniques for regular polygons.

Grade 3–6 Core 🇬🇧 UK

Angles in Polygons - Corbettmaths

corbettmaths 545K views

Corbettmaths covers finding missing interior and exterior angles in polygons concisely.

Grade 3–6 Core 🇬🇧 UK

Angles in Polygons

Maths Genie 304K views

Maths Genie works through polygon angle exam questions step by step.

Grade 3–6 Core 🇬🇧 UK

Interior & Exterior Angles Explained

Minity Maths 57K views

Crisp 4K explainer of interior and exterior angles including finding the number of sides.

Jump to 0:52How to find the sum of interior angles 3:00How to find an interior angle (for regular polygons)3:22Sum of exterior angles 3:53Finding the number of sides of a polygon (for regular polygons)