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?

Answer 1

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

Answer 2

duodecaon etc.:
http://www.absorblearning.com/mathematics/demo/units/KCA008.html

Answer 3

duodecagon I mean

Answer 4

glooks

Answer 5

You wrong

Answer 6

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