Notes on "Fuzzy plane geometry I, II"

Abstract In this paper, we give membership functions of some concepts in Buckley and Eslami (Fuzzy Sets and Systems 86 (1997) 179–187, 87 (1997) 79–85) such as fuzzy distance, fuzzy lines, fuzzy circles, fuzzy area and fuzzy circumference of a fuzzy circle. By the use of formulas of those membership functions, one can define general fuzzy concepts in plane geometry.