Grade 8 · Year 9 · Class 8 · ages 13–14
Pythagorean theorem worksheets.
Free printable pythagorean theorem worksheets with answer keys. Finding a side of a right-angled triangle using a² + b² = c². Choose the level and the number of questions, then download a PDF or print.
- Grade 8
- Year 9 · Class 8
- Ages 13–14
- PDF + print
- Answer key
- Free
Sheet 56844. Change the options above or make a new worksheet.
Pythagorean theorem
Grade 8 · Medium · 12 questions · Sheet 56844
Name Date Score / 12
- 1.A right triangle has legs of 8 and 15. The hypotenuse is
- 2.A right triangle has legs of 3 and 4. The hypotenuse is
- 3.A right triangle has legs of 20 and 21. The hypotenuse is
- 4.A right triangle has legs of 10 and 24. The hypotenuse is
- 5.A right triangle has legs of 18 and 80. The hypotenuse is
- 6.A right triangle has legs of 9 and 40. The hypotenuse is
- 7.A right triangle has legs of 40 and 42. The hypotenuse is
- 8.A right triangle has legs of 6 and 8. The hypotenuse is
Pythagorean theorem
Grade 8 · Medium · 12 questions · Sheet 56844
Name Date Score / 12
- 9.A right triangle has legs of 14 and 48. The hypotenuse is
- 10.A right triangle has legs of 5 and 12. The hypotenuse is
- 11.A right triangle has legs of 16 and 30. The hypotenuse is
- 12.A right triangle has legs of 7 and 24. The hypotenuse is
About pythagorean theorem worksheets
Finding a side of a right-angled triangle using a² + b² = c². This worksheet maker is aimed at Grade 8 (Year 9, Class 8) (ages 13–14) and makes new questions every time, with the answers worked out by a maths engine.
Teaching tip
The hypotenuse is always the longest side, opposite the right angle. Square the sides, add them, then square root.
What the three levels look like
- Easy: A right triangle has legs of 6 and 8. The hypotenuse is ___
- Medium: A right triangle has legs of 20 and 21. The hypotenuse is ___
- Challenge: A right triangle has a hypotenuse of 100 and one leg of 28. The other leg is ___
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FAQ
Pythagorean theorem worksheets: questions
What grade are pythagorean theorem worksheets for?
Pythagorean theorem is usually taught around Grade 8 (Year 9, Class 8), for ages 13–14. Every grade has an easy, medium and challenge level, so you can go back to an earlier level or push ahead.
Do these pythagorean theorem worksheets include an answer key?
Yes. Press Download PDF with the answer key switched on and the last page lists every answer. Turn the key off for a clean student copy.
Can I make a new worksheet with different questions?
Yes. Press New worksheet for a fresh set of questions. Each sheet has a sheet number printed on it; open this page with the same level, question count and number to get exactly the same sheet again.
How do I help a child who finds pythagorean theorem hard?
The hypotenuse is always the longest side, opposite the right angle. Square the sides, add them, then square root. Start with the easy level, and practise a few minutes every day rather than one long session.
Which value of pi do the circle worksheets use?
They use 3.14 so answers are exact to two decimal places and easy to check.
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Pythagorean theorem (Grade 8): Finding a side of a right-angled triangle using a² + b² = c². Open the practice page or print a worksheet.
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