A line segment
polygon
A polygon is a closed plane (flat) shape where an area is enclosed by a number of straight lines that meet, two at a time. These straight lines form the boundary of the polygon and are called its sides.
Faces
isoelectric lines!
It is a plane shape, ie it is 2-dimensional or flat. It is a closed shape defined by four straight lines that meet at four points, two lines at each point.
polygon
A polygon is a closed plane (flat) shape where an area is enclosed by a number of straight lines that meet, two at a time. These straight lines form the boundary of the polygon and are called its sides.
Faces
isoelectric lines!
It is a plane shape, ie it is 2-dimensional or flat. It is a closed shape defined by four straight lines that meet at four points, two lines at each point.
A map in the shape of an oval is called the Mollweide Map.
An icosagon
No, because this browser is rubbish. But it is closed plane (flat) shape bounded by four straight lines.
the 3d shape that that has no flat face is the circle
Lines that show equal elevation on a map are called contour lines. These lines connect points of the same elevation above or below a reference level, typically sea level. Contour lines help in visualizing the terrain's shape and slope, indicating how steep or flat an area is. They are commonly used in topographic maps.
In general, they are called horizontal lines, but they will only be that if they have a zero slope. They'll be "level" or "flat" lines.
Circle, oval etc just a flat shape with no straight lines. So, no squares, rectangles, pentagons, or any polygon.