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
36 Degrees and the early legs of the "Meds" tour. It was also released as a B-side to the "Because I Want You" and "Song to Say Goodbye" singles under the title "36 Degrees 2005". It continues to be performed in various arrangements into 2016. Reviews of the song's performance during Placebo's "MTV Unplugged" concert stated that "‘36 Degrees’ (written by a 19-year-old Stefan and a 21-year-old Brian) becomes softer but it’s no less powerful as you’re drawn further into the lyrics of this song" and "In this setting ["36 Degrees"] becomes unexpectedly lush, underpinned by disarmingly subtle waves of piano and