Asked by alisa
The measure of an interior angle of a regular n-gon is 140 degree. How many sides are in the regular polygon?
Answers
Answered by
Reiny
let the number of sides be n
180(n-2)/n = 140
180n - 360 = 140n
40n = 360
n = 9
9-sided regular polygon, a nonagon
180(n-2)/n = 140
180n - 360 = 140n
40n = 360
n = 9
9-sided regular polygon, a nonagon
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