Question

What is the sum of the interior angles of an octagon?
(Points : 1)

Answer 1

A rule of polygons is that the sum of the exterior angles always equals 360 degrees, but lets prove this for a regular octagon (8-sides). First we must figure out what each of the interior angles equal. To do this we use the formula: ((n-2)*180)/n where n is the number of sides of the polygon.

Answer 2

@bibby @tester97 am i on the correct path

Answer 3

The formula for determining the degree measure of interior angles within a polygon is 180(n-2), where n is the number of sides of the polygon. This can be quickly proved by using a triangle, with three sides (n=3), and seeing how 180(3-2) = 180, which we geometrically know to have 180 degrees total.

Answer 4

Therefore it would be C, correct?