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No. In a right triangle, the two legs (the shorter sides) and the hypotenuse (longest side) obey the Pythagorean Theorem: a² + b² = c², where c is the length of the hypotenuse, and a and b are lengths of each leg.

So 7² + 7² = 49 + 49 = 98. But 9² = 81, so this is not a right triangle.

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Q: Does 7 7 and 9 cm make a right triangle?
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