A sphere
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To answer this question more details need to be provided. For example one a 3D shape one side is called a face.
The faces in a 3-D shape (polyhedron, for example) are bordered by edges.
hemisphere
3d shape* * * * *It does not.A face is a plane (2-dimensional) part of the surface of a solid (3-dimnsional) object. Sometimes the term is includes curved surfaces, such as along the length of a cylinder.
A hexahedron or a triangular dipyramid. This is the shape formed by two triangular pyramids (tetrahedrons) stuck together along one triangular face.