Answer
A) 50 degrees
B) 25 degrees
Work Step by Step
A) We see that the measure of angle 2 is:
$$ = 180 - 130 \\ = 50 \ degrees $$
B) We see that the measure of angle 4 is:
$$ =155-130 \\ = 25 \ degrees$$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter P - Preliminary Concepts - P.3 - Informal Geometry and Measurement - Exercises P.3 - Page 23: 20
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