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question in \\( \\triangle l m n \\), \\( m n = 8 \\), \\( n l = 13 \\)…

Question

question
in \\( \triangle l m n \\), \\( m n = 8 \\), \\( n l = 13 \\), and \\( l m = 9 \\). which statement about the angles of \\( \triangle l m n \\) must be
true?
answer
\\( m \angle l > m \angle n > m \angle m \\)
\\( m \angle l > m \angle m > m \angle n \\)
\\( m \angle n > m \angle m > m \angle l \\)
\\( m \angle m > m \angle n > m \angle l \\)
\\( m \angle m > m \angle l > m \angle n \\)

Explanation:

Step1: Recall the triangle side - angle relationship

In a triangle, the larger side is opposite the larger angle.

Step2: Compare the side lengths

Given \(MN = 8\), \(NL=13\), and \(LM = 9\). So, \(NL>LM > MN\).

Step3: Determine the angle order

Since \(NL\) is the longest side, the angle opposite \(NL\) (\(\angle M\)) is the largest. Since \(LM\) is the middle - length side, the angle opposite \(LM\) (\(\angle N\)) is the middle - sized. Since \(MN\) is the shortest side, the angle opposite \(MN\) (\(\angle L\)) is the smallest. So, \(m\angle M>m\angle N > m\angle L\).

Answer:

\(m\angle M>m\angle N > m\angle L\) (the option corresponding to \(m\angle M>m\angle N > m\angle L\) in the multiple - choice list)