Point at infinity complex field, the set of points at infinity is a manifold. In artistic drawing and technical perspective, the projection on the picture plane of the point at infinity of a class of parallel lines is called their vanishing point. In hyperbolic geometry, points at infinity are typically named ideal points. Unlike Euclidean and elliptic geometries, each line has two points at infinity: given a line "l" and a point "P" not on "l", the right- and left-limiting parallels converge asymptotically to different points at infinity. All points at infinity together form the Cayley absolute or boundary of a hyperbolic plane.
Parallel Lines make "Parallel Lines" an extremely popular album in the United Kingdom, where it was a number-one hit and charted for 106 weeks during the late 1970s. "Q" magazine called the album "a crossover smash with sparkling guitar sounds, terrific hooks and middle-eights more memorable than some groups' choruses." In a retrospective appraisal of 1970s post-punk albums, "Spin" magazine's Sasha Frere-Jones said "Parallel Lines" may have been "the perfect pop-rock record" and Blondie's best album. Christian John Wikane from "PopMatters" later called it "a creative and commercial masterpiece by Blondie ... indisputably one of the great, classic albums of the rock