The sum of the angles in a convex 10-sided polygon is:
a.1800°
b.188°
c. 3600°
d. 1440°

Question

The sum of the angles in a convex 10-sided polygon is:    
a.1800° 
   b.188° 
   c. 3600° 
   d. 1440°

ibbutibbu. · Answer

The correct answer is D

bibby · Answer

Why is D correct?

ibbutibbu. · Answer

The sum of the interior angles of a polygon with n sides is 2n - 4 right-angles. 
With n = 10, this gives: 
90(2*10 - 4) 
= 1440deg. 

That makes each angle 1440/10 = 144deg.

bibby · Answer

I just did (n-2)*180
8*180=1440

ibbutibbu. · Answer

I just did it another way. Whats the diff?

bibby · Answer

The diff is that you're not supposed to give the answers. Even in multiple choice questions. You're here to explain, not do their homework

ibbutibbu. · Answer

Oh ok, im sorry. Should I delete that post?

bibby · Answer

nah it's fine, you ended up explaining

ibbutibbu. · Answer

Ok