A Cyclic-Order Property of Bodies with Three-Face Vertices

Abstract

A cyclic-order property is defined for three-dimensional bodies with vertices formed by three faces. The property is useful in resolving ambiguities caused by the extraction of imperfect line data from photographs of such bodies. The property augments the grammatical rules-that govern the possibility or impossibility of the existence of three-dimensional bodies corresponding to particular two-dimensional line-structure projections.