no
Yes.
Hexagon
If the polygon (not ploygon!) has n vertices, the sum of the angles is (n-2)*pi radians or (n-2)*180 degrees.
The sum of the interior angles of a n-gon is (n-2)*180 degrees. n = 7, so sum of interior angles = (7-2)*180 = 5*180 = 900 degrees.
no
Yes.
A triangle.
No, it's a POLYGON.
Hexagon
n is number of sides. Sum of interior angles is 180n - 360, so 180n = 2880 + 360, ie 3240 and n = 3240/180 ie 18.
PENTAGON!!!
a megcagon
a tetradecagon
heptagon
Pentagon
as many as it wants