asked 76.1k views
22 votes
A triangle has sides with lengths of 11 inches, 18 inches, and 20 inches. Is it a right triangle?

asked
User Jokeefe
by
7.6k points

1 Answer

10 votes

yes IF

20² = 11² + 18²

20² = 400

and

11² + 18² = 121 + 324 = 445

so NOT a right triangle

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