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Congruence tests for triangles

Use the SSS, SAS, AAS and RHS tests to decide whether two triangles are congruent, and spot information that is not enough.

⏱ 20 min❓ 9 questions

What you'll be able to do

  • ✔I can state the four congruence tests SSS, SAS, AAS and RHS
  • ✔I can decide which test, if any, proves two triangles congruent
  • ✔I can explain why AAA and ‘two sides and a non-included angle’ are not tests

How this works

  1. 1Read the short explanations first — they teach you what you need before each question.
  2. 2Answer each question, then tap Check. A right answer moves you on automatically; if it's wrong, you'll see a friendly explanation of why.
  3. 3Finish all 3 steps to see your score — sign in and subscribe to unlock the full lesson and save it.

What's inside

9 questions and 1 quick teaching card, including:

  • 🔗Match the pairs — Choose the partner that goes with each item.
  • 🔘Multiple choice — Tap the answer you think is best, then check it.

👪Grown-up tip: sit alongside younger learners for the first few lessons. Read the questions together and chat about the explanations — that's where the real learning sticks.

Sign in and subscribe to unlock the full lesson and save your progress.

Curriculum: AC9M8SP01