vertex
a closed plane figure with 3 or more line segments is a polygon
A polygon, if all the line segments are in the same plane.
A polygon
A triangle is.
Poo,bum,wees
polygon
polygon
A polygon is a plane figure that is closed with straight line segments.
polygon
Polygon
It is a polygon, but only if it is all in one plane.
a polygon is a closed plane figure bounded by 3 or more line segments