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8th Grade Pythagorean Theorem Worksheets

This free printable worksheet practices finding a missing side of a right triangle. It has 24 problems, and the answer key is on its own page when you print, so you can check work afterward.

Tip: Work one problem at a time and check each answer against the key at the end.

Name: ____________________Date: ____________

8th Grade Pythagorean Theorem

  1. A right triangle has legs 10 and 24. Find the hypotenuse.
  2. A right triangle has hypotenuse 51 and one leg 24. Find the other leg.
  3. A right triangle has legs 60 and 63. Find the hypotenuse.
  4. A right triangle has hypotenuse 26 and one leg 10. Find the other leg.
  5. A right triangle has hypotenuse 13 and one leg 5. Find the other leg.
  6. A right triangle has legs 15 and 36. Find the hypotenuse.
  7. A right triangle has hypotenuse 52 and one leg 20. Find the other leg.
  8. A right triangle has hypotenuse 68 and one leg 32. Find the other leg.
  9. A right triangle has legs 20 and 21. Find the hypotenuse.
  10. A right triangle has legs 20 and 48. Find the hypotenuse.
  11. A right triangle has hypotenuse 75 and one leg 21. Find the other leg.
  12. A right triangle has legs 8 and 15. Find the hypotenuse.
  13. A right triangle has legs 16 and 30. Find the hypotenuse.
  14. A right triangle has hypotenuse 10 and one leg 6. Find the other leg.
  15. A right triangle has hypotenuse 87 and one leg 60. Find the other leg.
  16. A right triangle has legs 32 and 60. Find the hypotenuse.
  17. A right triangle has hypotenuse 17 and one leg 8. Find the other leg.
  18. A right triangle has hypotenuse 5 and one leg 3. Find the other leg.
  19. A right triangle has legs 7 and 24. Find the hypotenuse.
  20. A right triangle has legs 3 and 4. Find the hypotenuse.
  21. A right triangle has legs 21 and 72. Find the hypotenuse.
  22. A right triangle has hypotenuse 29 and one leg 20. Find the other leg.
  23. A right triangle has legs 9 and 12. Find the hypotenuse.
  24. A right triangle has legs 6 and 8. Find the hypotenuse.

Answer Key: 8th Grade Pythagorean Theorem

  1. 26
  2. 45
  3. 87
  4. 24
  5. 12
  6. 39
  7. 48
  8. 60
  9. 29
  10. 52
  11. 72
  12. 17
  13. 34
  14. 8
  15. 63
  16. 68
  17. 15
  18. 4
  19. 25
  20. 5
  21. 75
  22. 21
  23. 15
  24. 10

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More 8th grade worksheets: 8th Grade Equations · 8th Grade Exponents · 8th Grade Scientific Notation · 8th Grade Square Roots and Cube Roots · 8th Grade Slope · 8th Grade Word Problems