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In the cource of development of the computer aided design (CAD) system, a new question named ""hidden-line problem"" has come forth. This paper deals with this problem and introduces a new method to eliminate from a polyhedron drawn by a computer, edge lines or parts of edge lines that are invisible to a given vantage point. And it also includes some illustrative examples solved by this method.
Susumu Furukawa (1971) studied this question.