# Tetrahedron

The plural of tetrahedron is
tetrahedra |
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Instructions: In "spin" mode it freely spins and will respond to your mouse. In "drag" mode it stops spinning and you can use your mouse to move it. | |||||||||||||||||||||||

And it is the only Platonic Solid with no parallel faces. |

When we say "tetrahedron" we often mean "regular tetrahedron" (in other words all faces are the same size and shape) But it could be an |

In fact, you can make fair dice out of all of the Platonic Solids. |

Make your own Tetrahedron, cut out the shape and glue it together. |