From the given information, we can note that angle1 and angle2 are corresponding angles with respect to line u. Angle2 and angle9 are alternate exterior angles with respect to the right vertical line and angle5 and angle7 are alternate interior angles with respect to line v.
Therefore, the theorems which justify the answer are, respectively: Corresponding angles theorem, Alternater exterior angles theorem and Alternate Interior angles theorem.
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Answer:
2 + 2 = 4
Step-by-step explanation:
They would be alternate exterior so they would have to to be equal
2k + 11 = 131
-11 -11
2k = 120
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2k 2k
k = 60