To solve for \( m\angle AJG \) in the given configuration, we can apply properties of parallel lines and transversals.
Given:
- \( \overline{AB} \parallel \overline{CD} \)
- \( \overline{EF} \parallel \overline{GH} \)
- \( m\angle IKD = 118^\circ \)
Since \( \overline{AB} \parallel \overline{CD} \) and \( \overline{EF} \parallel \overline{GH} \), we can analyze the positions of the angles formed by the transversals crossing the parallel lines.
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Identify relationships of angles involving \( m\angle IKD \): The angle \( \angle IKD \) can relate to different angles formed by the transversals. Specifically, \( \angle AJG \) is formed by the intersection of a transversal from line \( \overline{EF} \) towards line \( \overline{AB} \).
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Use alternate interior angles: Since \( \overline{EF} \parallel \overline{GH} \) and the transversal cuts through them, alternate interior angles are equal. Therefore, if \( \angle IKD \) relates transversally to another angle on the same side, it forms relationships we can use.
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Identify and calculate complementary or supplementary angles: Given \( m\angle IKD = 118^\circ \), which belongs to a linear pair with an adjacent angle on line \( \overline{CD} \). The angle adjacent to it, denoted as \( \angle IKC \), would be: \[ m\angle IKC = 180^\circ - m\angle IKD = 180^\circ - 118^\circ = 62^\circ \]
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Relate \( m\angle AJC \) to \( m\angle AJG \): If \( \angle AJG \) and \( \angle IKC \) are on the same transversal, depending on their complete configuration, we can assess that: \[ m\angle AJG = m\angle IKC = 62^\circ \]
Thus, the final result is: \[ \boxed{62^\circ} \]