Congruent and Similar Shapes — 2 Interactive Lessons (Ages 14–16)

Same shape, or same size too? This product gives you two interactive lessons that teach congruent and similar shapes side by side.

Mastering Congruent and Similar Shapes at GCSE

The first lesson defines congruent shapes and applies the rules SSS, SAS, AAS and RHS to identify congruent triangles in diagrams and solve problems. The second lesson explains that similar shapes have the same shape but may differ in size, and that enlargement or reduction by a scale factor produces similar shapes. Students calculate scale factors, find missing lengths and angles, and check whether triangles are similar using sides in the same ratio.

What’s Included

• Congruent Shapes: a 27-slide interactive lesson
• Similar Shapes: an 18-slide interactive lesson
• The SSS, SAS, AAS and RHS congruence rules with worked examples
• Scale factor questions and missing lengths and angles
• Quiz, fill-in-the-blank and sorting activities with instant feedback

Key Benefits for Students

• Clear rules for proving triangles congruent
• Shows how scale factors link similar shapes
• Practises finding missing lengths and angles
• Instant feedback on answer questions

Why Teachers Love It

• No prep — two ready-made lessons in one purchase
• Worked examples model each congruence rule
• Self-marking questions support independent practice
• Suits teaching, revision and homework
• Covers two linked GCSE geometry topics

Love this? You’ll love…

• Constructing and Bisecting Angles — Interactive Lesson (Ages 14–16)
• Pythagoras Theorem — Interactive Lesson (Ages 14–16)
• Circle Theorem: Cyclic Quadrilaterals — Interactive Lesson (Ages 14–16)

A dependable addition to a GCSE geometry unit, covering two linked topics in one purchase. Secure congruence and similarity skills support proof, trigonometry and circle theorems.

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FAQ

What year group is this for? Years 10–11 (ages 14–16), GCSE.

What is included? Two lessons: Congruent Shapes and Similar Shapes.

Is it self-marking? Yes, with instant feedback on the questions.