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polygon - A plane figure bounded by a set of straight lines
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?
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°
Free Pick's Theorem Calculator - This calculator determines the area of a simple polygon using interior points and boundary points using Pick's Theorem
Free Polygon Side Calculator - Determines the sides of a polygon given an interior angle sum.
Free Polygons Calculator - Using various input scenarios of a polygon such as side length, number of sides, apothem, and radius, this calculator determines Perimeter or a polygon and Area of the polygon.
This also determines interior angles of a polygon and diagonals of a polygon as well as the total number of 1 vertex diagonals.