Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-5 Literal Equations and Formulas - Practice and Problem-Solving Exercises - Page 113: 42


The polygon has 9 sides.

Work Step by Step

In order to answer the problem, you must use the formula provided and plug in the polygons interior angle of 1260 for "s", and answering for "n" afterward. $s=180(n-2)$ $1260=180(n-2)$ $(1260)/180=(180)/180(n-2)$ $7=1(n-2)$ $7=n-2$ $7+2=n-2+2$ $9=n$
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