Assertion: tetrahedron | /r/CapableOf | form triangular base
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text: If one creates an array of tetrahedrons with 10 tetrahedrons forming a triangular base, then adding 6 tetrahedrons to form the next level up, followed by 3 tetrahedrons at the third level up and finally a single tetrahedron at the fourth level at the top, one creates a larger, stable tetrahedral structure called an isotropic vector matrix (21,24).