Question

Geometry Help

Answer 1

D

Answer 2

How do you know?

Answer 3

How many sides does this polygon have?

Answer 4

first do you recall what rule we can use to find angle 1?

Answer 5

9? and no I don't know anything in Geometry.

Answer 6

"n" sides of a polygon makes 360 degrees at the center.
So each side will make 360 / n degrees at the center.
That will be the measure of angle 1. All you need is to count the number of sides "n" of the polygon and plug that into 360/n.

Answer 7

we take 360/number of sides

Answer 8

So there are 10 sides on a polygon - right?
So if there are 10 sides, what would angle 1?

360/10= ?

Answer 9

I believe that the answer is actually C. If you divide 360 by ten, the number of sides, you will find that the central angle, angle 1, is 36. If 180 degrees are in every triangle's angle all you have to do to find angle to is subtract 36 from 180 to get 144 which you divide by two to find angle two. 144 divided by two is seventy two therefore C is your answer.

Answer 10

(n-2) × 180°
10-2= 8
8 x 180=1440
1440/10 = 144