Congruency in triangles
Lesson presentations and activities
This lesson is for GCSE Higher revision but can be used for a high ability KS3 class. This lesson goes through what is meant by ‘congruency’ and the four conditions that are sufficient to prove that two triangles are congruent. There is also an extension on being able to solve GCSE problems on congruency which will extend their learning to a Grade A.
Reviews
missmjames5 years ago
Clear and straight forward thanks
RunnerNZ5 years ago
Great, thank you, very clear examples
jglr5 years ago
Practice questions, homeworks and assessments
Congruent triangles KS3 KS4 non-claculator. Includes examination style questions, some challenging questions. Includes areas of kite and rhombus, Pythagoras' Theorem, some basic circle theorems, isosceles triangles, area of a triangle. Useful for revision, classwork and homework. Also includes notes on conditions for congruency and why SSA and AAA do not work. Positive feedback always welcome and helps.
Reviews
TES Resource Teama year ago
We are pleased to let you know that your resource Congruent Triangles KS3KS4 with Solutions, has been hand-picked by the Tes resources content team to be featured in https://www.tes.com/teaching-resources/blog/maths-homework-secondary in February 2025 on https://www.tes.com/teaching-resources/blog. Congratulations on your resource being chosen and thank you for your ongoing contributions to the Tes Resources marketplace.
shuklahetalb2 years ago
Thank you for sharing. Great resource
mgregoriou5 years ago
Excellent work, thank you.
Decide which buildings are free from zombies (shufflers and nibblers) by using knowledge of congruence and similarity to help Deputy Nick Crimes. The PowerPoint has basic animations (the answers basically) as it was exported from Notebook, but I've no doubt you can add some if you like. There's a worksheet if the students need it.
Reviews
TES Resource Team8 years ago
Thank you for publishing your resource. It has been selected to be featured in a new secondary maths collection.
ehoulding8 years ago
mghornsby9 years ago
This is awesome. My Y9's will love this! Thanks so much.
A worksheet on powerpoint with answers on the following slide. Match up the congruent triangles, leaving ones which are not. For each match give a reason (eg.SSS). I have included some misconceptions to catch some out and also give possible class discussion points, (and edited the mistake mentioned in the comments)
Reviews
Bally42835 years ago
This looks brilliant - a really well-thought-out exercise. Thanks for sharing!
WIL3605 years ago
looks great, thank you for sharing
tr6rv6506 years ago
Just what I am after. Many thanks for sharing
The topic of Loci and Transformatons from the GCSE books of the Mathematics Enhancement Program. For information about these resources and an index for the whole collection please visit http://www.mrbartonmaths.com/CIMT.htm Keywords: Similarity, Similar, Triangle, Congruence, Shape, Enlargement, Scale Factor, Triangle, Length, Centre, Map, Area, Volume, Line, Ratio, Reduction, Proportion, Angle, Degrees, Bisector, Loci, Perpendicular, Parallel, Problem, Context, Locus, Circle, Arc, Compass, Functional, Scale, Measure, Length, Width, Construct, Ruler, Map, Plan, Centimetre, Metre,.
Reviews
TES Resource Team8 years ago
Thank you for publishing your resource. It has been selected to be featured in a new secondary maths collection.
Joyjade8 years ago
Very helpful
Joansz10 years ago
Very useful. The worked examples clearly show how the topic should be tackled and the exercises are perfect for my students. Thank you.
























