A polygon
It is a polygon that is a closed plane figure with 3 or more straight lines.
A quadrilateral is a closed plane figure with four straight sides.
A polygon
If they are straight sides, then a polygon. Otherwise, simply "a closed plane figure with 3 or more sides".
Polygon
Yes
yes
Any closed figure that is not entirely composed of straight sides, such as an ellipse or a circle.
A closed plane figure which is bounded by straight sides.
A Polygon is a closed plane figure bounded by straight sides.Polygons is a plane figure with more than 3 straight sides and angles and are typically 5 or more.
a figure, esp. a closed plane figure, having three or more, usually straight, sides.
1. has at least 3 straight sides 2.closed figure 3. forgot the third one