Tangential quadrilateral all of whose sides are tangent to a single conic section has three diagonals that meet at a point. From a tangential quadrilateral, one can form a hexagon with two 180° angles, by placing two new vertices at two opposite points of tangency; all six of the sides of this hexagon lie on lines tangent to the inscribed circle, so its diagonals meet at a point. But two of these diagonals are the same as the diagonals of the tangential quadrilateral, and the third diagonal of the hexagon is the line through two opposite points of tangency. Repeating this same
Man with a Movie Camera modern Soviet Union they discover and present in the film. "Man with a Movie Camera" is famous for the range of cinematic techniques Vertov invented, deployed or developed, such as multiple exposure, fast motion, slow motion, freeze frames, match cuts, jump cuts, split screens, Dutch angles, extreme close-ups, tracking shots, reversed footage, stop motion animations and self-reflexive visuals (at one point it features a split-screen tracking shot; the sides have opposite Dutch angles). "Man with a Movie Camera" was largely dismissed upon its initial release; the work's quick-cut editing, self-reflexivity, and emphasis on form over content were all subjects of