# Answer to Question #17215 in Geometry for alyssa

whats the sum of the measures of the exterior angle of an octogan?

1
2012-10-25T11:50:32-0400

interior sum =pi ( n-2)

n=8

pi*6

exterior = pi - inetrior

sum

exterior=n*pi-sum interior

sum exterior= 8*pi-6*pi=2pi

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