Geometry: Common Core (15th Edition)

by Charles, Randall I.

Published by Prentice Hall

ISBN 10: 0133281159

ISBN 13: 978-0-13328-115-6

Chapter 2 - Reasoning and Proof - Chapter Test - Page 133: 9

Answer

The statement is not a good definition because it is not reversible.

Work Step by Step

The reverse is: A writing instrument is a pen. A pencil is also a writing instrument, yet it is not a pen, so this is false.

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