Answer
$$y=108^o$$
Work Step by Step
Since $y$ and $108^o$ are alternate-interior angles, then they are equal. That is
$$y=108^o$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 12 - Section 12.1 - Angles and Polygons - Exercise - Page 388: 26
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