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The lengths of the sides of a triangle are 7​, 8, and 11. Classify the triangle as​ acute, right, or obtuse.

1 Answer

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c^2 < a^2 + b^2 = acute

c^2 > a^2 + b^2 = obtuse

c^2 = a^2 + b^2 = right

so

11 ^2 ? 7^2 + 8^2

121 > 113


answer

the triangle is​ an obtuse triangle
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