Answer
rectangle
Work Step by Step
A quadrilateral whose opposite sides are parallel and congruent to one another is a parallelogram. A parallelogram that has four right angles is a rectangle.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 6 - Polygons and Quadrilaterals - 6-4 Properties of Rhombuses, Rectangles, and Squares - Practice and Problem-Solving Exercises - Page 380: 27
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