Define a corner:
A corner is the place where three or more edges meet.
Define a solid:
A solid is a geometrical figure in three dimensions.
Define an edge:
An edge is the line along which two sides meet.
Define a side:
A side is the flat part that makes the whole “skin” of the solid.
What are the characteristics of a cube?
A cube has 6 sides, 12 edges and 8 corners.
What are the characteristics of a parallelepiped?
A parallelepiped has 6 sides, 12 edges and 8 corners.
What are the characteristics of a ball?
A ball has 1 side, no edges and no corners