1
a cone has 1 curvedsurface.
ONE
A cone has one curved surface.
A cone only has a single curve. It is a single-faced form with a point and no proper edges with a continuous curve.
A cone has either one or two surfaces and either one or no edges.
It has one.
1
one
A cone has two surfaces, one vertex and no edges.
1 edge and 2 surfaces
ther is 20 surfaces on a cone because the is 1 on it sharp part * * * * * In fact, one flat surface (and one curved one).
The flat and the curved surfaces. In ice cream cone terms the ice cream and the cone are the two surfaces. Even if you eat the ice cream and the cone gets empty there are 2 surfaces, the inside and the outside curved surfaces.