Polygon Dilemma!

Geometry Level 1

Sameer has some geometry homework and is stuck with a question. The question says that the sum of the interior angles of a polygon doesn't exceed 2014 degrees.

What is the maximum possible number of sides of the polygon?


The answer is 13.

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4 solutions

The sum of interior angle of a polygon is given by s = ( n 2 ) ( 180 ) s=(n-2)(180) where n n is the number of sides. We substitute 2014 2014 into the formula, we have

2014 = ( n 2 ) ( 180 ) 2014=(n-2)(180)

2014 180 + 2 = n \dfrac{2014}{180}+2=n

n 13.19 n \approx 13.19

Therefore, the desired answer is 13 \boxed{13} .

Suppose that the polygon in question has n sides. Then we can say that the sum of all of its interior angles(let's denote it by S) is

S = 180(n - 2) degrees Since S does not exceed 2014, we have the inequality

180(n - 2) <= 2014 180n - 360 <= 2014 180n <= 2374 and n <= 13.1888888..... The maximum integral solution to this inequality is 13

180(n-2) : where n =no of sides 2014= 180(n-2) ..... solve it

Kimo Koko
Jul 30, 2014

For Any Polygon No Of Sides= ( summation of all it's internal angles/180)+2 So,For Our Problem No of Sides = (2014/180)+2=13.1888 But As No Of Sides Should Be An Integer , We Have To Choose The Lowest Nearest Integer Which Is (13) and our polygon summation of internal angles will be ((13-2) 180)=11 180=1980 degrees

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