Equilateral pentagon of δ can be seen from the figure: Simplifying, δ is obtained as function of α and β: The remaining angles of the pentagon can be found geometrically: The remaining angles of the orange and blue triangles are readily found by noting that two angles of an isosceles triangle are equal while all three angles sum to 180°. Then formula_7 and the two remaining angles of the green triangle can be found from four equations stating that the sum of the angles of the pentagon is 540°, the sum of the angles of the green triangle is 180°, the angle
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