Question 303163
If each interior angle of a regular polygon measures 120°, how many sides does the polygon have?

{{{ ((n-2)*180)/n = 120 }}}
n = number of sides
{{{ (n-2)*180 = 120*n }}}
{{{ n - 2 = (120/180) * n }}}
{{{ -2 = (2/3)n - n }}}
{{{ -2 = (-1/3)n }}}
{{{ 2 = (1/3)n }}}
{{{ 6 = n }}}
6 sides, it is a hexagon