Answer
$m\angle ACE=115$
Work Step by Step
Use the definition of a linear pair:
$m\angle ACE+m\angle ACB=180$
$m\angle ACE+65=180$
$m\angle ACE+65-65=180-65$
$m\angle ACE=115$
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 1 - Tools of Geometry - 1-5 Exploring Angle Pairs - Practice and Problem-Solving Exercises - Page 39: 36
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