Saccheri–Legendre theorem Saccheri–Legendre theorem In absolute geometry, the Saccheri–Legendre theorem states that the sum of the angles in a triangle is at most 180°. Absolute geometry is the geometry obtained from assuming all the axioms that lead to Euclidean geometry with the exception of the axiom that is equivalent to the parallel postulate of Euclid. The theorem is named after Giovanni Girolamo Saccheri and Adrien-Marie Legendre. The existence of at least one triangle with angle sum of 180 degrees in absolute geometry implies Euclid's parallel postulate. Similarly, the existence of at least one triangle with angle sum of less than 180 degrees
Silk Degrees Silk Degrees Silk Degrees is the seventh album by Boz Scaggs, released on Columbia Records in 1976. The album peaked at No. 2 and spent 115 weeks on the "Billboard" 200. It has been certified five times platinum by the RIAA and remains Scaggs's best selling album. "Silk Degrees" spawned four singles. "It's Over", "Lowdown", and "Lido Shuffle" made the Top 40, while "What Can I Say" peaked at No. 42. The album was recorded at Davlen Sound Studios and Hollywood Sound Studios in Los Angeles. Among the accompanying musicians, David Paich, Jeff Porcaro, and David Hungate became members of