Answer
Trapezoid
Work Step by Step
If m$\angle$H and m$\angle$J are supplementary, then HL and JK are parallel and a trapezoid has one set of parallel sides.
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 - Section 4.4 - The Trapezoid - Exercises - Page 209: 7
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