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
The Sum of Us The Sum of Us The Sum of Us is a play by David Stevens. It is the third play in his now completed "A Currency Trilogy" of which the first play is "The Inn at the Beginning of the World". The second play is "The Beast and the Beauty" produced by the Old Mill Theatre, Perth, on 22 June 2012. The plot revolves around the comfortable relationship between widower Harry and his gay son Jeff and their individual searches for the right mate. Harry unconditionally loves his Rugby-playing son and even takes an active part in Jeff's search for Mr.