If the sum of the interior angles of a regular polygon measures up to 1440 degrees, then how many sides does the polygon have?	Choose the correct answer.
A) 10
B) 16
C) 12
D) 11
E) 14
one of the interior angle = 180 - 360/n   sum of the interior angles is = n (180 - 360/n)   given   n(180 - 360/n)=1440   180n - 360 = 1440   180n = 1800   n = 1800/180= 
<gadget id="calculator">1800/180</gadget>
<output>10</output>
10   10NSWER:10
<result>A</result>
If the sum of the interior angles of a regular polygon measures up to 1440 degrees, then how many sides does the polygon have?