Ages 13–18
BrainteenAges 12–18MathsWorksheet
Pythagoras’ theorem (More shapes) · Practice set 2
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Find the missing side of each right-angled triangle, in cm.
Curriculum links
- Common Core 8.G.B.7: Use the Pythagorean Theorem to find unknown side lengths in right triangles.
- England NC KS3.MA.GEO.12: Use Pythagoras' Theorem and trigonometric ratios to solve problems with right-angled triangles.
- BNCC EF09MA14: Solve problems applying the Pythagorean theorem.
- Programmes FR C4.MA.EG.2: Use the Pythagorean theorem to calculate lengths.
Related sheets
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About this activity
What your child practises
Skills: Pythagoras’ theorem (level 2).
Applying a method step by step and checking the answer – the skills secondary-school maths tests are built on.
What’s included
- 15 questions
- An answer key you can print with the sheet or on its own
- An on-screen version with instant marking and stars
Age and school year
Made for ages 12–18. That’s Grade 7–12 in the US, Year 8–13 in England, JSS 1 – SS 3 in Nigeria and Class 7–12 in India.
How to use it
- Print it at home or school – it fits a standard A4 or US Letter page.
- Print the answer key too, so marking takes seconds.
- Play it on screen: answers are marked instantly and children earn stars.
- Write on it on a tablet or touchscreen with a finger or stylus – no printer needed.
Tips for parents and teachers
- Ask for the working, not just the answer – in exams, clear method earns marks even when the answer slips.
- Play it on screen for instant feedback, then print a fresh version as a timed, calculator-free check.
- Treat mistakes as information: note what went wrong next to each incorrect answer.
Good to know
- Time needed
- About 20–30 minutes
- You’ll need
- A printer (or a tablet to work on screen), a pencil and an eraser
- Difficulty
- On level (More shapes) – pitched at ages 12–18
- Answer key
- Yes – print it with the sheet or on its own