Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning
ISBN 10: 0-49539-132-8
ISBN 13: 978-0-49539-132-6

Chapter 2 - The Logic of Compound Statements - Exercise Set 2.3 - Page 61: 4

Answer

This figure is not a quadrilateral

Work Step by Step

If this figure is a quadrilateral, then the sum of its interior angles is 360 degrees. The sum of the interior angles of this figure is not 360 degrees. ∴ This figure is not a quadrilateral Modus Tollens: If p then q. Therefore not q implies not p
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