Answer: JMK=69°
Explanation:
1] <KJM + <JML = 180° ( co-interior angles since L1 is parallel to L2)
39° + <JML = 180°
<JML = 180° - 39°
<JML = 141°
2] <JML - <KML = <JMK
141° - 72° = <JMK
<JMK = 69°
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