Answer
x=5
$\angle$F=97$^{\circ}$
Work Step by Step
$\angle$D=$\angle$A
2x+40=50
2x=10
x=5
$\angle$A+$\angle$E+$\angle$F=180
50+33+$\angle$F=180
$\angle$F=97
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 5 - Review Exercises - Page 273: 19
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