Answer
$1800^o$
Work Step by Step
RECALL:
The total measurement of the angles of a polygon with $n$ sides is given by the formula:
$180^o(n-2)$
Thus, the sum of the angles inside a 12-sided polygon is:
$=180^o(12-2)
\\=180^o(10)
\\=1800^o$
Thinking Mathematically (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0321867327
ISBN 13:
978-0-32186-732-2
Chapter 10 - Geometry - Chapter Summary, Review, and Test - Review Exercises - Page 681: 32
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