Using the formula for sum of paragon polygon interior angles what would the be the sum of the interior angles of an octagon formula for the sum of polygon interior angles some equals n minus 2 times 180° number of sides of the polygon define the sum of the interior angles of the polygon count the sides and plug it into the formula and minus 2 equals 180 answers 135°, 1080°, 1440°

To find the sum of the interior angles of an octagon, we can use the formula:

Sum = (n - 2) * 180°
where n is the number of sides of the polygon.

For an octagon (a polygon with 8 sides), we plug in n = 8 into the formula:
Sum = (8 - 2) * 180°
Sum = 6 * 180°
Sum = 1080°

Therefore, the sum of the interior angles of an octagon is 1080°.