Show that AB =CD and AD = BC, show that the opposite sides of a parallelogram are equal in length

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.3: Informal Geometry And Measurement
Problem 31E: A trapezoid is a four-sided figure that contains one pair of parallel sides. Which sides of the...
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By definition, a parallelogram is a four-sided figure which its opposite sides are parallel. Show that AB =CD and AD = BC, show that the opposite sides of a parallelogram are equal in length 

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