Answer :

A circle is a shape that has no sides and no vertices. 

If you are looking for 3D shapes that have no sides and no vertices then the answer would be the following:

Sphere - a sphere has no sides, no vertices, and no faces.
Cylinder - a cylinder has no sides, no vertices, but it has 2 faces. 
Cone - a cone has no sides, no vertices, but it has 1 face. 

Answer;

A circle or a sphere

Explanation;

An edge is the place where two faces or sides meet. Edges are straight; they cannot be curved. Sides are the faces of a 3 D shape and vertices are the corner of the shape

A circle is a round shape that has no sides or vertices,

A sphere has no vertices, no faces and no edges.