SOLUTION: what is the angle sum of a regular polygon with 7 sides? I have tried using the equation of 180(n-2)/n 180(7-2)/7= 128 is the answer I am getting. Is that right. Would the

Algebra ->  Polygons -> SOLUTION: what is the angle sum of a regular polygon with 7 sides? I have tried using the equation of 180(n-2)/n 180(7-2)/7= 128 is the answer I am getting. Is that right. Would the      Log On


   

Question 187776: what is the angle sum of a regular polygon with 7 sides?

I have tried using the equation of 180(n-2)/n
180(7-2)/7=
128 is the answer I am getting. Is that right. Would the angle sum of a regular polygon equal to 128?
thank you
Found 2 solutions by Alan3354, jim_thompson5910:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
what is the angle sum of a regular polygon with 7 sides?
I have tried using the equation of 180(n-2)/n
180(7-2)/7=
128 is the answer I am getting. Is that right. Would the angle sum of a regular polygon equal to 128?
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The sum of the angles of a 7-sided polygon is (7-2)*(180) = 900º
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Each angle is 900/7 = ~ 128.57º

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
You have the right idea, but you don't divide by "n". If you're looking for the sum of all of the angles of a heptagon (a regular polygon with 7 sides), then you use this formula

S=180%28n-2%29


S=180%287-2%29 Plug in n=7 (since there are 7 sides)


S=180%285%29 Subtract


S=900 Multiply


So if you add up all of the angles in a heptagon, then the result will be 900 degrees.