Answer: Choice D) 103 degrees
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Step-by-step explanation:
The angle 1 is an exterior angle with angles 2 and 3 being remote interior angles. Due to the exterior angle theorem, we can add the remote interior angles to get the exterior angle
measure of angle 1 = (measure of angle 2) + (measure of angle 3)
measure of angle 1 = (31)+(72)
measure of angle 1 = 103 degrees