for octagon we know it has eight sides and eight angle ,length of each side and measurement of each angle is equal . So area of octagon is calculated by dividing it into eight small isoscale triangle.after calculating area of one triangle we multiply it by 8 hence we get area of octagon.What is the formula for an octagon?
The Math. A regular octagon is an eight sided polygon where all of the sides are the same length (s), with a height (h), one can create a octagon shaped object (e.g. column or planter) such as an octagon column is derived by the following formula: Where the Area =`2(1 + sqrt(2))*s^2` for an octagon.What is the measurement of an octagon?
The octagon has 8 sides and we plug this value into our formula: S = 180(8 - 2) = 1080°. Hence the sum of the measures of the interior angles in an octagon is 1080°.