If the sum of interior angle measures of a polygon is 900, how many sides does the polygon have?

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Answer 1 · 2015-12-19T00:38:03

the polygon is *heptagon (7-sided polygon)

Sum of interior angles is #180(n-2)#

Since sum is #=900#,

#900=180(n-2)#

#900/180=(180(n-2))/180#

#900/180=(cancel180(n-2))/cancel180#

#5=n-2#

#5+2=n#

#7=n#