The center of the stained glass window is in the shape of a regular polygon. what is the measure of each exterior angle? ∘

Step-by-step explanation:

First of all, we have to know that a stained glass window has 8 sides. So, it's a regular polygon with 8 sides.

Now, the sum of all interior angles of any regular polygon is expressed as

However, the problem is asking only about exterior angles.

We know by definition that a polygon exterior angles sum 360°, and in this case, the polygon has 8 equal exterior angels. So, each of them would measure

Therefore, each exterior angle measures 45°.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional

a thesis statement is not a fact or a question

step-by-step explanation:

a thesis statement is a topic it is not a fact or a question