This animated sequence showsan antiprism from top to bottom.

This animated sequence shows an antiprism unfolding into two pyramids.

This animated sequence shows a cone from top to bottom.

This animated sequence shows a cube from top to bottom.

This animated sequence shows a cylinder from top to bottom.

This animated sequence shows an octahedron from top to bottom.

This animated sequence shows a pyramid from top to bottom.

This animated sequence shows a rectangular prism from top to bottom.

This animated sequence shows a tetrahedron from top to bottom.

This animated sequence shows a triangular prism from top to bottom.

In this Google Earth Voyager story visit architectural landmarks in New York City to learn about the geometry of prisms. In this lesson, visit the Flatiron Building and learn about triangular prisms. Then build a scale model of the Flatiron Building.

To the see Google Earth content that accompanies this lesson click on this link (best viewed in Chrome).

In this Google Earth Voyager story visit architectural landmarks in New York City to learn about the geometry of prisms. In this lesson, visit the 432 Park Avenue to learn about rectangular prisms. Then build a scale model of this building.

To the see Google Earth content that accompanies this lesson click on this link (best viewed in Chrome).

In this Google Earth Voyager story visit architectural landmarks in New York City to learn about the geometry of prisms. In this lesson, visit the Freedom Tower in Lower Manhattan and learn about antiprisms. Then build a scale model of the Freedom Tower.

To the see Google Earth content that accompanies this lesson click on this link (best viewed in Chrome).

In this Google Earth Voyager story visit pyramids around the world and learn about the geometry of pyramids. In this lesson, visit two Mayan pyramids and learn about sequences and series, as well as using what you've learned about the geometry of pyramids and other three-dimensional figures.

This is part of a collection of math clip art images that show two-dimensional nets for 3D objects.

This is part of a collection of math clip art images that show two-dimensional nets for 3D objects.

This is part of a collection of math clip art images that show two-dimensional nets for 3D objects.

This is part of a collection of math clip art images that show two-dimensional nets for 3D objects.

January 2014. In this issue of Math in the News we look at 3D printing technology. In particular, we look at Nike's recent unveiling of a new running shoe developed using 3D printing. Mathematically, we look at recursive functions, since the 3D printing technology was used for rapid, iterative prototyping of the new shoe.