octagon - An eight (8) sided polygon
Formula: P = 8s
Janice says that the sum of the measures of the interior angles of an octagon is 900. Is Janice cor
Janice says that the sum of the measures of the interior angles of an octagon is 900. Is Janice correct? Why or why not?
She's [B]incorrect.
[/B]
The interior angle sum for a polygon is found with this formula:
Interior Angle Sum = (sides - 2) x 180
Since an octagon has 8 sides, we have:
Interior Angle Sum = (8 - 2) x 180
Interior Angle Sum = 6 x 180
Interior Angle sum = 1080
Octagon
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