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What is the sum of the interior angles of an octagon? 900° 720° 1080° 1260°?

What is the sum of the interior angles of an octagon? 900° 720° 1080° 1260°?
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What is the sum of the interior angles of an octagon? 900° 720° 1080° 1260°?

User KeksArmee
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Each extra side adds 180 degrees.
3 sides is 180
8 sides is 180 + 5(180) = 1080
User Ryan Gooler
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