Question

Find the interior angle sum for each polygon. Tound your answer to the nearest tenth if necessary.

Answer 1

Given: A regular octagon

To Determine: The interior sum for the given polygon

Solution

The formula for finding the interior angle sum of a polygon is given as

`\begin{gathered} S_{um\text{ of interior angle of a polygon}}=(n-2)180^0 \\ n=number\text{ of sides of the polygon} \end{gathered}`

An octagon is a polygon with 8 sides

Substitute the value of n = 8 into the formula