A polygon.
A shape with straight sides is called a polygon. But it can have 3 or 4 sides as well.
A closed shape with three or more straight sides is called a polygon. Examples of polygons include triangles, squares, pentagons, hexagons, and so on.
polygon
polygon
A shape with four sides has more vertices because there are more points where edges (straight lines) meet than a 3-sided shape.
A shape with straight sides is called a polygon. But it can have 3 or 4 sides as well.
A closed shape with three or more straight sides is called a polygon. Examples of polygons include triangles, squares, pentagons, hexagons, and so on.
polygon
It's called a "polygon".
A shape with eight straight sides is called on octagon. There is not another specific name, but you could call it the more generic name: polygon.
polygon
If they are straight sides and the shape encloses a space then it is a polygon.
A shape with four sides has more vertices because there are more points where edges (straight lines) meet than a 3-sided shape.
A cube
App
A straight line
A shape with more than 10 sides may be called a polygon - but only if all the sides are straight lines - and there is nothing in the question to suggest that they are.