Mammoth Memory


Tetrahedron – Is a solid shape of 4 triangles.

A tetrahedron is a 3D shape of 4 triangular sides

Tetchy about head room (tetrahedron) wouldn’t you be if you had a ceiling like this.


Example 1

A tetrahedron has four sides but without 3D imaging equipment you will only see 3 

The most you can see of a tetrahedron is three sides at once.


Example 2

This example of a tetrahedron only has 2 sides showing but there are 4

A tetrahedron placed so you can only see two faces.


Example 3

Birds-eye plan of a tetrahedron

A tetrahedron viewed from above.

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