Create a free account now and get 3 full lessons, completely free. Get my 3 free lessons

Canada: choose your country
Practise online insteadThe answer key prints on page 2.

Congruent, similar or neither: compare side lengths

Grade 8 math · Fieldbook Learning

Name ______________________ Date __________

Put the sides in order. Equal sides mean congruent. Sides in the same ratio mean similar. Otherwise neither.

  1. Triangle 1 has sides 8, 10, 5. Triangle 2 has sides 8, 10, 5. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  2. Triangle 1 has sides 10, 11, 10. Triangle 2 has sides 11, 10, 8. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  3. Triangle 1 has sides 10, 14, 6. Triangle 2 has sides 10, 14, 4. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  4. Triangle 1 has sides 11, 9, 13. Triangle 2 has sides 18, 26, 22. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  5. Triangle 1 has sides 9, 12, 9. Triangle 2 has sides 12, 9, 9. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  6. Triangle 1 has sides 14, 15, 4. Triangle 2 has sides 15, 14, 4. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  7. Triangle 1 has sides 21, 16, 10. Triangle 2 has sides 84, 64, 40. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  8. Triangle 1 has sides 5, 14, 13. Triangle 2 has sides 14, 13, 5. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  9. Triangle 1 has sides 17, 7, 23. Triangle 2 has sides 23, 17, 6. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  10. Triangle 1 has sides 31, 19, 14. Triangle 2 has sides 14, 19, 31. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  11. Triangle 1 has sides 8, 12, 5. Triangle 2 has sides 7, 8, 12. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  12. Triangle 1 has sides 10, 13, 6. Triangle 2 has sides 10, 13, 7. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  13. Triangle 1 has sides 18, 18, 13. Triangle 2 has sides 54, 54, 39. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  14. Triangle 1 has sides 27, 25, 25. Triangle 2 has sides 27, 25, 25. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  15. Triangle 1 has sides 9, 23, 16. Triangle 2 has sides 9, 23, 16. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  16. Triangle 1 has sides 22, 27, 20. Triangle 2 has sides 66, 81, 60. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  17. Triangle 1 has sides 4, 20, 17. Triangle 2 has sides 4, 20, 17. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  18. Triangle 1 has sides 26, 24, 29. Triangle 2 has sides 26, 23, 29. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  19. Triangle 1 has sides 19, 19, 5. Triangle 2 has sides 19, 19, 4. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
  20. Triangle 1 has sides 10, 32, 36. Triangle 2 has sides 72, 64, 20. Are the triangles congruent, similar (but not congruent), or neither? Write congruent, similar or neither.
More free practice: fieldbooklearning.com/ca/practice/grade-8/congruent-similar-or-neither-compare-side-lengths/

Answer key: Congruent, similar or neither: compare side lengths

  1. congruent
  2. neither
  3. neither
  4. similar
  5. congruent
  6. congruent
  7. similar
  8. congruent
  9. neither
  10. congruent
  11. neither
  12. neither
  13. similar
  14. congruent
  15. congruent
  16. similar
  17. congruent
  18. neither
  19. neither
  20. similar