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
360 Degrees of Billy Paul 360 Degrees of Billy Paul 360 Degrees of Billy Paul is an album by soul singer Billy Paul. It was produced by Kenny Gamble and Leon Huff and arranged by Bobby Martin, Lenny Pakula and Norman Harris. Released in 1972, it includes the Grammy Award-winning number 1 pop and soul single "Me and Mrs. Jones" and its follow-up "Am I Black Enough for You?" which reached number 29 on the soul chart and number 79 on the pop chart. The album was expanded and remastered by Big Break Records for compact disc in 2012 with three bonus tracks, new liner