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GR.4.1

Proving congruence

Prove shapes are congruent

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 4–8 Core 🇬🇧 UK

Congruent Triangle Proof | Grade 5+ Crossover | GCSE Maths Tutor

The GCSE Maths Tutor 97K views

Full UK GCSE guide to writing congruent-triangle proofs, with worked practice questions.

Jump to 0:46SSS Rule 2:42SAS Rule 3:55ASA Rule 4:48RHS Rule 5:59AAS Rule 7:44Are These Congruent?

Grade 3–7 Core 🇬🇧 UK

GCSE Maths - Congruent Triangle Rules (2026/27 exams)

Cognito 527K views

Clear UK walkthrough of the four congruence rules SSS, SAS, AAS and RHS with examples.

Jump to 1:16The 4 Rules for Congruence 1:32SSS (Side-Side-Side)2:11SAS (Side-Angle-Side)3:17AAS (Angle-Angle-Side)4:54RHS (Right angle-Hypotenuse-Side)

Grade 3–7 Core 🇬🇧 UK

Congruent Triangles - Corbettmaths

corbettmaths 214K views

Corbettmaths explains the conditions SSS, ASA, AAS, RHS and SAS for triangles to be congruent.

Grade 4–8 Core 🇬🇧 UK

Congruent Triangles

Maths Genie 155K views

Maths Genie works through congruent-triangle proofs step by step for GCSE.

Grade 5–8 Core 🇬🇧 UK

Congruent Triangles Proof - GCSE Questions

Beast Mode Maths 53K views

Practises writing GCSE congruence proofs using angle facts and parallel lines.