Answer
$m\angle1=90$
$m\angle2=50$
$m\angle3=40$
Work Step by Step
You can use the Vertical Angles Theorem to find the measure of each angle by identifying the vertical pairs.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 2 - Reasoning and Proof - 2-6 Proving Angles Congruent - Lesson Check - Page 124: 1
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