Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 2 - Test - Page 119: 14

Answer

m$\angle$4=50$^{\circ}$

Work Step by Step

m$\angle$1+m$\angle$2+m$\angle$3=180 70+30+m$\angle$3=180 m$\angle$3=80$^{\circ}$ m$\angle$ACE=180-m$\angle$3 m$\angle$ACE=100$^{\circ}$ 2m$\angle$4=m$\angle$ACE 2m$\angle$4=100 m$\angle$4=50$^{\circ}$
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