Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 4 - Section 4.1 - Properties of a Parallelogram - Exercises - Page 184: 6


m$\angle$A=63$^{\circ}$ m$\angle$B=117$^{\circ}$ m$\angle$C=63$^{\circ}$ m$\angle$D=117$^{\circ}$

Work Step by Step

m$\angle$A=m$\angle$C 2x+3=3x-27 x=30 m$\angle$A=2x+3 m$\angle$A=2(30)+3 m$\angle$A=m$\angle$C=63$^{\circ}$ m$\angle$B=180-m$\angle$A m$\angle$B=180-63 m$\angle$B=m$\angle$D=117$^{\circ}$
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