In \(\triangle{LMN}, LM = |x - 7|, MN = |x - 4|\) and \(NL = x + 1,\) where \(x\) is a number whose value is not known.

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In \(\triangle{LMN}, LM = |x - 7|, MN = |x - 4|\) and \(NL = x + 1,\) where \(x\) is a number whose value is not known. Is \(\triangle{LMN}\) an acute triangle (a triangle each of whose angles measures less than \(90^{\circ})?\)

1) \(NM = 10\)

2) \(LM = 7\)

The OA is D