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Elementary Archive

Browse Elementary Polyhedra

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Bases and Faces [12/05/2001]

I can't figure out the difference between a base and a face on the shapes we are learning.

Definitions of Cones and Cylinders [03/02/2004]

Are cones and cylinders pyramids, prisms or neither? My 5th grade geometry class cannot reach an agreement on this subject!

Edge of a Cube Given Volume [10/06/1997]

I am a teacher currently teaching volume to a class of Grade 5 pupils.

Euler's Formula [11/26/2001]

I have to find Euler's formula for two-dimensional figures and explain it at a university level and at an elementary-school level.

Prefixes for Naming Polyhedra [12/07/2000]

I am having trouble understanding Prof. Conway's explanation of his system of prefixes for naming large numbers and polyhedra.

Pyramid Corners [05/01/2001]

How many corners does a pyramid have? Is a corner the same thing as a vertex?

Truncating [01/19/2002]

What does truncating mean?

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