Triangles, pentagons, hexagons, any shape. And a circle becomes a sphere with just ... The base of this shape is a square, which we know from its name. The other four faces are all triangles.

Google is currently offering 6 different icon shapes, including the default circle. Names for these shapes aren’t shown in the Pixel wallpaper app, but they are, respectively: “circle ...

A circle is not a polygon because it doesn’t have straight sides. Polygons can look quite different, but have the same name. For example, look at these two shapes and count the sides on each.