Question 486570
{{{a = 180(1 - 2/n)}}} divide by 180
{{{a/180=1-2/n}}}
{{{2/n=1-a/180}}}
{{{2/n=(180-a)/180}}}divide by 2
{{{1/n=(180-a)/360}}}
{{{n=360/(180-a)}}}
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How many sides does the outdoor bandstand shown below have if the performance platform is a regular polygon with interior angles measuring 120°?
{{{n=360/(180-120)}}}
{{{n=360/60=6}}}sides