Question 284187
how many sides does a polygon havi if the sum of its interoir angels is 3240

We have a theorem that the sum of the interior angles of a polygon with n sides is equal to (n-2)*180.

So we have:

(n-2)*180 = 3240

180n - 360 = 3240
180n = 3240-360
180n = 2880

Solve the above equation for n.