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Mathematics 60 Online
OpenStudy (anonymous):

13. Is triangleABC with vertices A(–2, –5), B(–3, 2), and C(1, –2) a right triangle? (Points : 5) triangleABC is a right triangle because 3.13A. triangleABC is a right triangle because 3.13B. triangleABC is a right triangle because 3.13C. triangleABC is not a right triangle.

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