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OpenStudy (anonymous):
Find the sum of the measures of the angles of the figure. **It's a 9-gon.**
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OpenStudy (anonymous):
1260º total
OpenStudy (anonymous):
There are (n-2) triangles in a polygon. Triangles are 180deg each. 9-2 = 7 7*180 = 1260
OpenStudy (anonymous):
Thanks, again. c:
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