a one-sided surface that can be constructed by affixing the ends of a rectangular strip after first having given one of the ends a one-half twist
a surface that has only one surface, as it is attached to itself and twisted halfway around
a twisted loop, normally made of paper
A Moebius strip is a one-edged geometric surface with only one continuous side, formed by giving a 180 degree twist to a narrow, rectangular strip of paper and then connecting the two ends together.