Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 6 - Polygons and Quadrilaterals - 6-5 Conditions for Rhombuses, Rectangles, and Squares - Lesson Check - Page 386: 2


According to theorem 6-16, if the diagonals of a parallelogram cross at a right angle, then that parallelogram is a rhombus. In the diagram, the diagonals cross at right angles; therefore, this parallelogram is a rhombus.

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