A face is a flat (plane) or curved surface on a solid. It can also take the shape of a plane figure, such as a square or circle.
Examples:
To know how to represent the faces of a solid, read the concept sheet Constructing the Nets of Solids.
A solid with at least one plane (flat) face can slide.
A solid with at least one curved surface can roll.
A solid can have both plane and curved faces, so it can slide and roll.
A face is a plane or curved surface on a solid that is bounded by one or more edges.
A face can also be the base of a solid.
Examples:
To learn more about the bases of a polyhedron, read the Polyhedrons concept sheet (coming soon).
An edge is a line segment where two faces meet.
To help find the total number of edges in a solid, you can colour all the edges that you count.
Example:
A vertex is the point where the edges of a solid meet.
To help you find the total number of vertices in a solid, you can colour each vertex that you count.
Example:
Here is the number of faces, edges and vertices of different solids.
