Sum of angles of a triangle to zero. For a spherical triangle, the sum of the angles is greater than 180° and can be up to 540°. Specifically, the sum of the angles is where "f" is the fraction of the sphere's area which is enclosed by the triangle. Note that spherical geometry does not satisfy several of Euclid's axioms (including the parallel postulate.) Angles between adjacent sides of a triangle are referred to as "interior" angles in Euclidean and other geometries. "Exterior" angles can be also defined, and the Euclidean triangle postulate can be formulated as the exterior angle theorem. One can also consider the
Sum of the Parts Sum of the Parts Sum of the Parts is an album by tenor saxophonist/composer-arranger Ed Summerlin, released in 1998 on the Ictus label. "Los Angeles Times" reviewer, and Summerlin's onetime bandmate,Don Heckman, gave the album 3 stars and paid tribute to his erstwhile collaborator. Veteran tenor saxophonist-composer Ed Summerlin has been effectively venturing through the jazz avant-garde for more than three decades. "Sum of the Parts" displays the complexities and inherent swing in his dissonant, contrapuntal music. Resonant with influences from George Russell and Ornette Coleman, it nonetheless comes together as one of the genuinely individual voices in the arena