Fig. 913.01 Division of the QuarterTetrahedron into
Six Parts: A Quanta Module:
 The regular tetrahedron is divided volumetrically
into four identical quarters.
 The quartertetrahedron is divided into six identical
irregular tetrahedra, which appear as three
righthand and three lefthand volumetric units each
equal in volume to 1/24th of the original
tetrahedron. This unit is called the A Module.
 The plane net which will fold into either left or
right A modules is shown. Vertex C is at the vertex
of the regular tetrahedron. Vertex E is at the center
of gravity of the tetrahedron. Vertex D is at the
midedge of the tetrahedron. Vertex F is at the center
of the tetrahedron face. Note that AD = FB, DE
= EB, and AC = CF.
