Equilateral pentagon and no sides intersecting others. A common example of this type of pentagon is the regular 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
Victims of Terrorist Attack on the Pentagon Memorial memorial himself. He drew inspiration from the memorial to the 253 dead of the United States Coast Guard ship USS "Serpens", which is located in the northern corner of Section 34 at Arlington National Cemetery. The "Serpens" memorial is octagonal in shape and lists the names of the dead on its side panels. The Victims of Terrorist Attack on the Pentagon Memorial is a pentagonal granite marker high. On five sides of the memorial along the top are inscribed the words "Victims of Terrorist Attack on the Pentagon September 11, 2001". Aluminum plaques, painted black, are inscribed with the names