Question

Find the no of sides of regular polygon each interior sides is 140

Answer 1

Step-by-step explanation:

interior angle= 180(n-2)/n

140= 180(n-2)/n

140n= 180(n-2)

140n= 180n-360

40n= 360

n= 9

hence no. of sides of ploygon is 9

.....666.....