Hyperbolic triangle the third angle. The triangle where two vertices are ideal points and the remaining angle is right, one of the first hyperbolic triangles (1818) described by Ferdinand Karl Schweikart. The triangle where all vertices are ideal points, an ideal triangle is the largest possible triangle in hyperbolic geometry because of the zero sum of the angles. The relations among the angles and sides are analogous to those of spherical trigonometry; the length scale for both spherical geometry and hyperbolic geometry can for example be defined as the length of a side of an equilateral triangle with fixed angles. The length
The Three Degrees Kenny Gamble and Leon Huff, where they had their greatest successes. The first song they recorded for the label was with the studio band MFSB, titled "TSOP (The Sound of Philadelphia)", which was the theme song for "Soul Train". In October 1973, the group also made an appearance on the American television sitcom "Sanford and Son" (season 3, episode 4), singing their song "I Didn't Know". Their first album for the Philadelphia International label, "The Three Degrees", spawned three hits: "Dirty Ol' Man" (which went gold in the Netherlands and Belgium), "Year Of Decision" (which made it to #13 in