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
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.
isoelectric lines!
polygon
Faces
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.
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.
isoelectric lines!
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
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.
Each flat face of a 3d object is called a face or a polygon!