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3d Figures

Three-dimensional figures can be classified based on their faces, bases, edges, and vertices. Prisms have two parallel congruent bases and faces that are polygons or rectangles, while pyramids have one base that can be any polygon and triangular faces. Examples of prisms include triangular and rectangular prisms, while examples of pyramids include square and triangular pyramids. Three-dimensional figures can also have curved surfaces, such as cylinders with two circular bases, cones with one circular base, and spheres with a fully curved surface.

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116 views2 pages

3d Figures

Three-dimensional figures can be classified based on their faces, bases, edges, and vertices. Prisms have two parallel congruent bases and faces that are polygons or rectangles, while pyramids have one base that can be any polygon and triangular faces. Examples of prisms include triangular and rectangular prisms, while examples of pyramids include square and triangular pyramids. Three-dimensional figures can also have curved surfaces, such as cylinders with two circular bases, cones with one circular base, and spheres with a fully curved surface.

Uploaded by

aung zaw moe
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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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
● 5 faces
2 triangular bases
Triangular Prism 3 rectangular faces
● 9 edges
● 6 vertices
● 6 faces
2 rectangular bases
Rectangular Prism 4 rectangular faces
● 12 edges
● 8 vertices
● 6 faces
2 square bases
Cube 4 square faces
● 12 edges
● 8 vertices
● 5 faces
1 square base
Square Pyramid 4 triangular faces
● 8 edges
● 5 vertices
● 4 faces
1 triangular base
Triangular Pyramid 3 triangular faces
● 6 edges
● 4 vertices
You should also be familiar with three-dimensional figures that have curved surfaces. These
figures include cylinders, cones, and spheres. You can classify these three-dimensional figures
based on information about their bases and surfaces.

Three Dimensional Figures with Curved Surfaces


Type Example Properties
● 2 circular bases
● 1 curved surface

Cylinder

● 1 circular base
● 1 curved surface
● 1 vertex
Cone

● 1 curved surface

Sphere

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