Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 10 - Geometry - 10.3 Polygons, Perimeter, and Tessellations - Exercise Set 10.3 - Page 637: 28

Answer

900°

Work Step by Step

Sum of the measures of angles in a n-sided polygon can be found using the following formula: (n-2) × 180° A heptagon has 7 sides Thus the sum of the measures of the angles of a 7-sided polygon = (7-2) × 180° = 900°
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