Roulette (curve) in this case, the point lies on the circle then the roulette is a cycloid. A related concept is a glissette, the curve described by a point attached to a given curve as it slides along two (or more) given curves. Formally speaking, the curves must be differentiable curves in the Euclidean plane. The "fixed curve" is kept invariant; the "rolling curve" is subjected to a continuous congruence transformation such that at all times the curves are tangent at a point of contact that moves with the same speed when taken along either curve (another way to express this constraint
What Is a Man Without a Moustache? What Is a Man Without a Moustache? What Is a Man Without a Moustache? () is a 2005 Croatian romantic comedy-drama film. Hrvoje Hribar directed the film and wrote the screenplay as an adaptation of Ante Tomić's 2000 novel of the same name. Starring Leon Lučev and Zrinka Cvitešić and set against a background of a country still recovering from the Croatian War of Independence, the film tells the story of a young widow who falls in love with a local priest and a difficult choice that the priest faces when being forced to choose between the woman and his