Answer
Sometimes true.
Work Step by Step
The diagonals are only congruent for specific parallelograms such as rectangles and squares.
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 4 - Review Exercises - Page 214: 11
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