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
Ministry of the Interior (Spain) (3) Minister of the Interior (4) Minister of the Interior and the Territory (5) Minister of Justice and the Interior (6) Minister of the Territory of the Peninsula (7) Between 1823 and 1835, neither a Ministry of the Interior nor Territory existed. 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