Geometry: Common Core (15th Edition)

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

Chapter 6 - Polygons and Quadrilaterals - 6-1 The Polygon Angle-Sum Theorems - Practice and Problem-Solving Exercises - Page 356: 7



Work Step by Step

We can find the sum of the interior angles by using the formula: $sum = 180 * (n-2)$ where "n" represents the number of sides. Therefore, we are left with, $sum = 180 * (7-2)$ $sum = 900$
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