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: 13

Answer

150 degrees

Work Step by Step

First, we use the formula to find the total degrees in a given polygon: $(n−2)180$, where n represents the number of sides. We then substitute n for 12, $(12−2)180.$ This gives us 1800. Finally, we divide by 12, since the polygon in question has 12 angles. $1800÷12=150$
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