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
Ministry of the Interior (Spain) Ministry of the Interior (Spain) The Ministry of the Interior of Spain () which historically could be known as "Ministerio de la Gobernación", "Ministerio del Orden Público", "Ministerio del Interior y la Gobernación" or "Ministerio del Interior y Justicia" is the executive branch responsible for policing, national security, immigration matters, prisons and road traffic safety. Spain spends around $ 25,5 billions (€ 22 billions) per year on security and public order, which puts it at 2% of GDP. The Ministry of the Interior is a department of the General Administration responsible for: The Minister of the Interior, as head of