Question

if each the internal angle 140 , then wthat is the number of sides ?

Answer 1

#AlexaRousey here!!

If question is abt regular polygon :

Interior angle of polygon having n sides = (n-2)180°/n

=) 140 = 180n - 360/ n

=) 140n = 180n - 360

=) 360 = 180n-140n

=) 360 = 40n

=) 360/40 = 9 =n

Hence number of sides = 9.

Thanks!!

Answer 2

side=360/exterior angle
interior angles=180-140=40°
so no of side=360/40=9