A collection of lesson plans and student handouts on teaching students about the "nanoworld."

This page brings you to a table of contents of three-dimensional figures. Selecting a figure will bring you to a page defining and illustrating the figure with applicable formulas listed.

A gallery of complex polyhedra with descriptions and characteristics.

Learn more about platonic sold geometry, understand the platonic solid names, view some solved examples, and try your hand at some interactive problems.

A comprehensive guide for learning all about square pyramids with definitions, properties, examples, and practice questions.

A comprehensive guide for learning all about tetrahedrons with definitions, properties, formulas, examples, and practice questions.

Explore the world of prisms in this mini-lesson by learning what are prisms, definitions with shapes and examples, the difference between regular, irregular, right, and oblique prisms, the surface area of a prism, and the volume of a...

Students explore polyhedron's through technology and paper/ pencil constructions.

This lesson focuses on polyhedra other than the platonic solids; these include an Archimedean solid, a polyhedron made up of different kinds of regular polygons, that looks the same from every direction. There are 13 different...

A Platonic solid is a polyhedron made up of only one kind of regular polygon, that looks the same from every direction. (In other words, the same number of faces meet at every vertex.) There are only five different Platonic solids:...

Did you know that the five regular platonic solids (tetrahedron, octahedron, icosahedron, cube, and dodecahedron) were thought to represent earth, air, fire, water, and the universe? This chart shows an image and provides a description...

What is a pyramid? Find a definition, example images, and formulas for finding the volume and surface area of a pyramid if given base and height measurements. Includes a very brief look at a pyramid in Egypt and its measurements.

This site has pictures and information on many different types of polyhedra.

Learn about platonic solids, a special type of polyhedra. Read a definition, make three-dimensional models using printouts, and play with an interactive animation, which will show you the faces, vertices, and edges on platonic solids:...

Practice using your graphing calculator for area and volume problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.

View and learn about five different polyhedra: tetrahedron, octahedron, icosahedron, hexahedron, and dodecahedron. Learn what Euler's Polyhedra Theorem is, and see examples of non-polyhedra as well.

Practice matching 2D nets to the 3D shapes the fold up into. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

This site gives a description of edge along with a visual representation. Be sure to use the links to related terms, everyday examples, challenging problems, more information, and the interactive check point located in the left-hand column.

This question and answer site provides a lot of basic information about polyhedra. The five regular polyhedra, "The Platonic Solids," are described.

This site gives you the prefixes for naming polygons and polyhedra.

A brief site that includes some activities to understand the figures.

This website provides instructions on how to create a truncated tetrahedron.

In Spanish. Different mathematical topics are presented with questions and activities.

Find a quick, concise explanation of what a polyhedra is. Examples are given and clearly explained.