4
If they are straight sides, then a polygon. Otherwise, simply "a closed plane figure with 3 or more sides".
A pentagon. A closed figure means that all the lines of the figure are connected.
Any closed figure that is not entirely composed of straight sides, such as an ellipse or a circle.
yes it does. a polygon has to be a closed figure with a least three sides and it can only have straight sides--no curves
4
A closed figure with seven sides is a "heptagon." It is sometimes also called a "septagon."
If they are straight sides, then a polygon. Otherwise, simply "a closed plane figure with 3 or more sides".
A pentagon. A closed figure means that all the lines of the figure are connected.
This closed figure, with straight sides, is known as a Polygon.
square
no.
A polygon.
A hexagon.
circle
Add together the length of its sides. The accumulated lengths of its sides is the perimeter.
If none of the sides ever cross each other, there cannot be a closed plane figure.