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Tetrahedron
Facts
(write these up on card & display)

The tetrahedron has four triangular faces and is sometimes
called a 'triangular pyramid'.

A tetrahedron is made up of 4 equilateral triangles.
 Tetrahedrons have 4 faces, 4 vertices and 6 edges.

The triangular faces of a tetrahedron 'taper' to a point which
is refered to as the apex.

Do tetrahedrons only have one apex?