Question

help please

Answer 1

each angle is an octagon s 135
and each angle with an exterior angle add up to 180

Answer 2

135+x=180

Answer 3

45 ?

Answer 4

yes!

Answer 5

thanks

Answer 6

np

Answer 7

any regular poly has angles (n-2)180

Answer 8

equal angles that is

Answer 9

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. In our case n=8 for an octagon, so we get:

((8-2)*180)/8 => (6*180)/8 => 1080/8 = 135 degrees. This means that each interior angle of the regular octagon is equal to 135 degrees.

Each exterior angle is the supplementary angle to the interior angle at the vertex of the polygon, so in this case each exterior angle is equal to 45 degrees. (180 - 135 = 45). Remember that supplementary angles add up to 180 degrees.

Answer 10

hope that helped as well :)

Answer 11

it did thanks both of you

Answer 12

you don't need to know all stuff
all you need to know is that exterior angle and interior sum to 180
since they are supplementary

Answer 13

take any polygon