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Mathematics 16 Online
OpenStudy (anonymous):

I NEED HELP! GIVING MEDALSS!!!!!! Attaching Photo!

OpenStudy (anonymous):

OpenStudy (ranga):

The external angles of all polygons add up to 360 degrees. An octagon has 8 sides and therefore 8 equal external angles that add to 360 degrees. Each external angle = 360 / 8 = 45 degrees. Internal angle = 180 - 45 = 135 degrees. Equate 4x + 12 to 135 and solve for x.

OpenStudy (anonymous):

The answer is 30.75? :D @ranga

OpenStudy (ranga):

yes.

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