Answer:
1) 45. Since it is congruent/corresponding to angle 7, which is 45 degrees.
2) 135. Because a straight line is 180 degrees, I substracted 45 from 180, getting 135 degrees, the measure of angle 1.
3) x = 20. Look at the work below.
Explanation:
180 - 45 = 135
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5x + 35 = 135
-35 -35
5x = 100
divide by 5
x = 20