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Lines of symmetry

Identify lines of symmetry and solve problems

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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Grade 1–4 Core 🇬🇧 UK

GCSE Maths - Lines of Symmetry (2026/27 exams)

Cognito 93K views

Crisp UK walkthrough of how to spot lines of symmetry in triangles and rectangles.

Jump to 0:26What is Symmetry?0:36Isosceles Triangle (1 Line of Symmetry)0:58Rectangle (2 Lines of Symmetry)1:25Equilateral Triangle (3 Lines of Symmetry)

Grade 1–4 Core 🇬🇧 UK

Line Symmetry - Corbettmaths

corbettmaths 69K views

Corbettmaths explains line symmetry and how to count a shape's lines of symmetry.

Grade 1–4 Core 🇬🇧 UK

Lines Of Symmetry Of 2D Shapes

Minity Maths 173K views

Covers symmetry of triangles, quadrilaterals and regular polygons with practice questions to finish.

Jump to 0:30What is a line of symmetry 2:03Symmetry of triangles 2:17Symmetry of regular polygons 2:58Practice questions (symmetry of quadrilaterals)

Grade 1–4 Core 🇬🇧 UK

GCSE Maths from Scratch 18.05a Lines of Symmetry

TLMaths 228K views

TLMaths builds up lines of symmetry from scratch with clear worked examples.