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9 December, 10:54

The lengths of the sides of a triangle are 18 km, 23 km, and 30 km. Is the triangle a right triangle, an acute triangle, or an obtuse triangle?

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  1. 9 December, 13:30
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    a^2 + b^2 = c^2 is right a^2 + b^2 > c^2 is acute a^2 + b^2 < c^2 is obtuse

    a^2 + b^2 = c^2

    18^2 + 23^2 = 30^2

    324 + 529 = 900

    853 < 900

    obtuse
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