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14 September, 09:41

If the side lengths of a triangle are 3, 6, and 7, then the triangle is obtuse.

True or false?

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Answers (1)
  1. 14 September, 13:38
    0
    Rule for obtuse triangle is:

    c^2 > a^2+b^2

    Here

    7^2 > 3^2 + 6^2

    49 > 9+36

    49>45

    So answer is True.
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