If "colsed" is meant to be "closed",
and if the figure is planar (flat),
and if the sides of the figure do not cross,
then it is a polygon. But answer to the question could include shapes such as stars (pentagrams) which are not polygons..
A quadrilateral is a 4 sided figure the has no curves and has strait sides.
A polygon, but only if it has no curves.
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
circle
it can, or it can have three a polygon is a closed figure with at least three angles and three sides and no curves.
A triangle. It has only three sides!
If the figure is a polygon ... with sides made of straight line segments ... then the perimeter is the sum of the lengths of all the sides. If part or all of the figure's boundary consists of curves, the perimeter is still the distance all around the figure, but you may need special formulas to find the lengths of the curved sections.
If none of the sides ever cross each other, there cannot be a closed plane figure.
A triangle.
There is no figure with a greatest number of sides. For any figure with n sides, there will be a figure with n+1 sides.
what is a figure with six sides
A polygon is any 2D figure with no curves, is closed in (no gaps), and is flat. An octagon is a specific polygon, one that has 8 sides (ex. a stop sign).