Pentagon Pentagon In geometry, a pentagon (from the Greek πέντε "pente" and γωνία "gonia", meaning "five" and "angle") is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting. A self-intersecting "regular pentagon" (or "star pentagon") is called a pentagram. A "regular pentagon" has Schläfli symbol {5} and interior angles are 108°. A "regular pentagon" has five lines of reflectional symmetry, and rotational symmetry of order 5 (through 72°, 144°, 216° and 288°). The diagonals of a convex regular pentagon are in the golden ratio to its
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