Question 534410
The interior angles of a polygon total (n-2)*180.
A regular polygon has all angles equal.
.
{{{ ((n-2)*180)/n = 160 }}}
.
{{{ (n-2)*180 = 160n }}}
.
{{{ 180n -360 = 160n }}}
.
{{{ 20n = 360 }}}
.
{{{ n = 18 }}}
.
The polygon has 18 sides.