It has 18 interior angles.
There are 4 interior angles in a quadrilateral
a hepagon is a seven sided sided polygon
4
4
You may be thinking of a heptagon. It has seven sides and seven angles.
It has 18 interior angles.
what is the total of interior angles in a nonagon?
There are 4 interior angles in a quadrilateral
A hexagon has six interior angles.
a hepagon is a seven sided sided polygon
Eight and interior angles of and octagon have is 8 eight
4 angles
(number of sides -2)*180 = sum of interior angles
Heptagons have seven sides.
There are eight interior angles, and 16 exterior angles.
6 interior angles and each angle is 120 degrees