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Decide whether sides make a right triangle

Grade 10 math · Fieldbook Learning

Name ______________________ Date __________

Check whether the squares of the two short sides add to the square of the longest.

  1. Do the side lengths 40, 42 and 60 make a right triangle? Answer yes or no.
  2. Do the side lengths 20, 21 and 29 make a right triangle? Answer yes or no.
  3. Do the side lengths 24, 45 and 51 make a right triangle? Answer yes or no.
  4. Do the side lengths 16, 30 and 33 make a right triangle? Answer yes or no.
  5. Do the side lengths 32, 60 and 66 make a right triangle? Answer yes or no.
  6. Do the side lengths 12, 16 and 20 make a right triangle? Answer yes or no.
  7. Do the side lengths 3, 4 and 5 make a right triangle? Answer yes or no.
  8. Do the side lengths 6, 8 and 10 make a right triangle? Answer yes or no.
  9. Do the side lengths 20, 21 and 31 make a right triangle? Answer yes or no.
  10. Do the side lengths 35, 120 and 126 make a right triangle? Answer yes or no.
  11. Do the side lengths 32, 60 and 68 make a right triangle? Answer yes or no.
  12. Do the side lengths 3, 4 and 6 make a right triangle? Answer yes or no.
  13. Do the side lengths 48, 90 and 102 make a right triangle? Answer yes or no.
  14. Do the side lengths 18, 24 and 30 make a right triangle? Answer yes or no.
  15. Do the side lengths 35, 120 and 124 make a right triangle? Answer yes or no.
  16. Do the side lengths 42, 144 and 150 make a right triangle? Answer yes or no.
  17. Do the side lengths 3, 3 and 4 make a right triangle? Answer yes or no.
  18. Do the side lengths 28, 96 and 102 make a right triangle? Answer yes or no.
  19. Do the side lengths 16, 30 and 34 make a right triangle? Answer yes or no.
  20. Do the side lengths 35, 84 and 92 make a right triangle? Answer yes or no.
More free practice: fieldbooklearning.com/ca/practice/grade-10/converse-of-the-pythagorean-theorem/

Answer key: Decide whether sides make a right triangle

  1. no
  2. yes
  3. yes
  4. no
  5. no
  6. yes
  7. yes
  8. yes
  9. no
  10. no
  11. yes
  12. no
  13. yes
  14. yes
  15. no
  16. yes
  17. no
  18. no
  19. yes
  20. no