Notes Three-Dimensional Figures
How Can You Classify Three-Dimensional Figures?
You can classify three-dimensional figures based on information about their faces, bases, edges,
and vertices. Three-dimensional figures include prisms and pyramids, as well as figures with
curved surfaces.
A prism is a three-dimensional figure with two parallel, congruent bases. The bases, which are
also two of the faces, can be any polygon. The other faces are rectangles. A prism is named
according to the shape of its bases.
A pyramid is a three-dimensional figure with only one base. The base can be any polygon. The
other faces are triangles. A pyramid is named according to the shape of its base.
Here are some three-dimensional figures with which you should be familiar:
Prisms & Pyramids
Type
Examples
Properties
Triangular Prism
โ 5 faces
2 triangular bases
3 rectangular faces
โ 9 edges
โ 6 vertices
Rectangular Prism
โ 6 faces
2 rectangular bases
4 rectangular faces
โ 12 edges
โ 8 vertices
Cube
โ 6 faces
2 square bases
4 square faces
โ 12 edges
โ 8 vertices
Square Pyramid
โ 5 faces
1 square base
4 triangular faces
โ 8 edges
โ 5 vertices
Triangular Pyramid
โ 4 faces
1 triangular base
3 triangular faces
โ 6 edges
โ 4 vertices
