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7 June, 23:39

The lengths of the sides of a triangle are 10 , 13 , and 19. classify the triangle as acute, right, or obtuse.

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  1. 8 June, 00:01
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    If c²=a²+b², it is a right triangle.

    if c²
    if c²>a²+b², it is a obtuse triangle.

    in this case, 19²=361, 10²+13²=269. 19²>10²+13², so it is an obtuse triangle.
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