Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 4 - Section 4.4 - The Trapezoid - Exercises - Page 200: 2


m$\angle$C=117$^{\circ}$ m$\angle$A=62$^{\circ}$

Work Step by Step

m$\angle$B+m$\angle$C=180 63+m$\angle$C=180 m$\angle$C=180-63 m$\angle$C=117$^{\circ}$ m$\angle$A+m$\angle$D=180 m$\angle$A+118=180 m$\angle$A=180-118 m$\angle$A=62$^{\circ}$
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