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in \\( \triangle c d e, m \angle c = 88 ^ { \circ } \\) and \\( m \angle d = 44 ^ { \circ } \\). which list has the sides of \\( \triangle c d e \\) in order from shortest
to longest?
answer
\\( \bigcirc d e, c d, e c \\)
\\( \bigcirc e c, c d, d e \\)
\\( \bigcirc c d, d e, e c \\)
\\( \bigcirc e c, d e, c d \\)
\\( \bigcirc d e, e c, c d \\)
\\( \bigcirc c d, e c, d e \\)
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Step1: Find the measure of the third angle
In \(\triangle CDE\), we know that the sum of the interior angles of a triangle is \(180^{\circ}\). Let \(\angle E\) be the third angle. Then \(\angle E=180^{\circ}-\angle C - \angle D\). Substituting \(\angle C = 88^{\circ}\) and \(\angle D=44^{\circ}\), we get \(\angle E=180^{\circ}-88^{\circ}-44^{\circ}=48^{\circ}\).
Step2: Apply the angle - side relationship
In a triangle, the side opposite the larger angle is longer. We have \(\angle D = 44^{\circ}\), \(\angle E=48^{\circ}\), \(\angle C = 88^{\circ}\). The sides opposite these angles are \(EC\) (opposite \(\angle D\)), \(CD\) (opposite \(\angle E\)), and \(DE\) (opposite \(\angle C\)) respectively. Since \(44^{\circ}<48^{\circ}<88^{\circ}\), then \(EC < CD
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EC, CD, DE