Geometry Videos

Please enjoy these videos.

They show you how to make excavated Platonic and Archimedean polyhedra, using simple secondary school level Geometry.

This set of videos is a work in progress — —- helpful comments are welcome via our ‘Contact’ page.

You may like to work out the missing ones such as the dodecahedron yourself.

This is a good video to start with…

Finding the proportions of the central triangle and making the net for an excavated cube

Finding the proportions of the central triangle and the net for the excavated tetrahedron

Finding the proportions of the central triangle and the net for the excavated truncated tetrahedron

Finding the proportions of the central triangle and making the net for the excavated truncated cube

Finding the proportions of the central triangle and making the net for the excavated octahedron

Finding the proportions of the central triangle and net for an excavated truncated octahedron