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Test whether a triangle is right-angled

8th grade (Year 9 in England) · 16 questions · Common Core: 8.G.B.6 · England: KS3 Geometry and measures, GCSE Foundation Geometry and measures

Name

Date

Score/ 16

  1. Question 1

    Omar builds a garden frame with sides 15 dm and 36 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  2. Question 2

    A triangle has sides 15, 36 and 39. Is it a right triangle?

    • A. Yes
    • B. No
  3. Question 3

    Grace builds a garden frame with sides 6 dm and 8 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  4. Question 4

    A triangle has sides 24, 45 and 51. Is it a right triangle?

    • A. Yes
    • B. No
  5. Question 5

    Hiro builds a garden frame with sides 3 dm and 4 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  6. Question 6

    A triangle has sides 10, 24 and 26. Is it a right triangle?

    • A. Yes
    • B. No
  7. Question 7

    Omar builds a garden frame with sides 3 dm and 4 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  8. Question 8

    A triangle has sides 7, 24 and 25. Is it a right triangle?

    • A. Yes
    • B. No
  9. Question 9

    Aisha builds a garden frame with sides 16 dm and 30 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  10. Question 10

    A triangle has sides 8, 15 and 17. Is it a right triangle?

    • A. Yes
    • B. No
  11. Question 11

    Elena builds a garden frame with sides 16 dm and 30 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  12. Question 12

    A triangle has sides 3, 4 and 6. Is it a right triangle?

    • A. Yes
    • B. No
  13. Question 13

    Elena builds a garden frame with sides 5 dm and 12 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  14. Question 14

    A triangle has sides 7, 24 and 25. Is it a right triangle?

    • A. Yes
    • B. No
  15. Question 15

    Hiro builds a garden frame with sides 16 dm and 30 dm and wants a perfect right-angled corner. How long should the diagonal brace be, in dm?

    Answer

  16. Question 16

    A triangle has sides 9, 12 and 15. Is it a right triangle?

    • A. Yes
    • B. No

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  1. 39
  2. Yes
  3. 10
  4. Yes
  5. 5
  6. Yes
  7. 5
  8. Yes
  9. 34
  10. Yes
  11. 34
  12. No
  13. 13
  14. Yes
  15. 34
  16. Yes