Abstract
It is known that, in most cases, points involved in solving or resolving problems of descriptive geometry are within the epure. However, there are situations in which the points necessary to solve some problems are outside the epure and become inaccessible in descriptive geometry constructions. Such problems, where the points necessary to determine the solutions are inaccessible, lead to constructions different from the current ones and constitute a particular category. This paper proposes a number of references on solving some problems of descriptive geometry where decisive elements in the construction of epure are outside the epure, inaccessible.
Keywords: Epure, Inaccessible Point, Theorem