Answer
m$\angle$1=28$^{\circ}$
m$\angle$2=152$^{\circ}$
Work Step by Step
m$\angle$1=x
m$\angle$2=4x+40
m$\angle$1+m$\angle$2=180
x+4x+40=180
5x=140
x=28
m$\angle$1=x=28$^{\circ}$
m$\angle$2=4(28)+40=152$^{\circ}$
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 1 - Review Exercises - Page 66: 29
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