Answer
m$\angle$2=60$^{\circ}$
Work Step by Step
m$\angle$3=m$\angle$4=m$\angle$2
m$\angle$3=2x+12
m$\angle$2=2x+12
m$\angle$2+m$\angle$1=180
2x+12+5x=180
7x=168
x=24
m$\angle$2=2x+12
m$\angle$2=2(24)+12
m$\angle$2=60
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 3 - Review Exercises - Page 174: 26
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