1a. Truncated tetrahedron 4/3 4/6 from truncation of tetrahedron 4/3

Data

The distance from the centre of the tetrahedron to the centre of the triangle is EP×0.2

The distance from the centre of the truncated tetrahedron to the centre of the

hexagon (red) is EA×0.6. These two distances are equal, thus EA = EP /3

Construction

The edges of the tetrahedron are divided in three equal parts.

The four hexagons (red) are applied on the original triangles. The four corners (yellow)

are cut off, resulting in four triangles (green-blue)

Line 1: Tetrahedron, net and solid.

Line 2 : Truncated tetrahedron , net and solid

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