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
Victims of Terrorist Attack on the Pentagon Memorial Arlington County Police Department, cemetery security, Fort Myer security, and other federal agencies converged on the scene. Cemetery officials said there were no eyewitnesses to the suicide, but were unable to ascertain if he was a veteran. Victims of Terrorist Attack on the Pentagon Memorial The Victims of Terrorist Attack on the Pentagon Memorial is a memorial over a group burial site at Arlington National Cemetery in the United States. It commemorates the victims of the Pentagon, which was struck by al-Qaeda terrorists as part of the September 11 attacks. The memorial specifically honors the five individuals for whom no