This paper continues our research in fuzzy plane geometry. Previously,
we studied fuzzy points and fuzzy lines. Now we investigate fuzzy cir
cles and fuzzy polygons. We show that the fuzzy area of a fuzzy circle
, or a fuzzy polygon, is a fuzzy number. We also argue that the fuzzy
perimeter of a fuzzy circle, or a fuzzy polygon, is a fuzzy number. (C
) 1997 Elsevier Science B.V.