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The formula below gives the summer of degrees, S, of the interior angles of a polygon. if n represents the number of sides, which equation solves for n?

 

 Aug 31, 2020
 #1
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S = (n - 2) x 180

S/180 = n - 2

Its pretty obvious from here...

 Aug 31, 2020
 #2
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S = (n - 2) * 180

 

n = S/180 + 2  smiley

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If you are not sure what to do, use the real numbers:

 

S = (n -2) * 180                   S = 360       n = 4

 

360 = (4 - 2) * 180

 

4 = 360/180 + 2

 

4 = 4

 Aug 31, 2020

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