circle, n.
- hringur, hringferill, hringlína
-> asymptotic circle, auxiliary circle, base circle, bundle of circles, circumcircle, circumscribed circle, cycle 7, escribed circle, excircle, generating circle, great circle, imaginary circle, incircle, inscribed circle, nine-point circle, nine-point circle theorem, one-sphere, oriented circle, orthoptic circle, osculating circle, pencil of circles, polar circle, principal circle, quadrature of the circle, rolling circle, semicircle, sheaf of circles, small circle, squaring the circle, unit circle - = circular disc
- -> vicious circle