Answer
40$^{\circ}$
Work Step by Step
m$\angle$1
Look at the section on the protractor that has the number 1 in red
read the top number
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 1 - Section 1.2 - Informal Geometry and Measurement - Exercises - Page 19: 19a
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