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Answer:
110 degrees
Explanation:
Since completing the known angle is 70 degrees, angle 1 must be 70 degrees. It is also adjacent to 110, which means it equals the same.
∠1 = 110
Vertically Opposite angles, means that when you have two parrallel lines, The angles opposite of each other are equal. So 4 = 2 on the bottom line.
This means angle 1 is equal to it's opposite angle, 110'.
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