a poloygon that does not curve or cross and is closed
9
A concave polygon.
When referring to it as a hexagon is not a faux pas.
If the hexagon's sides and angles are congruent, then it a regular hexagon.
A hexagon.
A nonagon.
A Pentagon
Heptagon or septagon
a poloygon that does not curve or cross and is closed
45
9
A square
360 /each exterior angle
square, rectangle, rhombus...
a regular shape which includes many sides possible but all sides are equeal in length
A concave polygon.