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
Secretariat of the Interior Secretariat of the Interior The Mexican Office for Domestic Affairs (, "SEGOB", literally "Office for Governance") is the public ministry concerned with the country's domestic affairs, the presenting of the president's bills to Congress, their publication and certain issues of national security. The country's principal intelligence agency, CISEN, is directly answerable to the Secretary of the Interior. The Secretary is a member of the President's Cabinet and is, given the constitutional implications of the post, the most important Cabinet Member. The Office is practically equivalent to Ministries of the Interior in most other countries (with the exception of the United