Answer
$B$
Work Step by Step
A concave polygon is a polygon with at least four sides and with at least one interior angle having a measure greater than $180^{\circ}$. The only polygon that would fit that definition would be option $B$.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 4 - Congruent Triangles - 4-3 Triangle Congruence by ASA and AAS - Practice and Problem-Solving Exercises - Page 241: 34
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