Answer
The perimeter of ABCD is 21 inches.
Work Step by Step
I used algebra and the Pythagorean theorem to find the answer, as shown.
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 5 - Section 5.2 - Similar Polygons - Exercises - Page 237: 40
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