Asked by Anal-G

The sum of the interior angles of polygon is 1800. Find the number of sides in the polygon and, what do you call that polygon?
Answered by Damon
for n sides
exterior angle = 360/n
so interior angle = 180 - 360/n
sum of interior angles = n(180 - 360/n)
=180 n (1 - 2/n)
so here
1800 = 180 n (1 - 2/n)
10 = n - 2
n = 12 sides
Answered by Damon
duodecaon etc.:
http://www.absorblearning.com/mathematics/demo/units/KCA008.html
Answered by Damon
duodecagon I mean
Answered by trill
glooks
Answered by Josh
You wrong
Answered by Niager
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