Equilateral pentagon Equilateral pentagon In geometry an equilateral pentagon is a polygon with five sides of equal length. Its five internal angles, in turn, can take a range of sets of values, thus permitting it to form a family of pentagons. The requirement is that all angles must add up to 540 degrees and must be between 0 and 360 degrees but not equal to 180 degrees. In contrast, the regular pentagon is unique, because it is equilateral and moreover it is equiangular (its five angles are equal; the measure is 108 degrees). Four intersecting equal circles arranged in a closed chain
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