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Which set of lengths CANNOT form a right-angled triangle?

Class 7Pythagoras PropertyTriangles
  • A7, 8, 9
  • B3, 4, 5
  • C5, 12, 13
  • D9, 40, 41

Step-by-Step Solution

, which is not . The other three are Pythagorean triples.
Answer: A) 7, 8, 9

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