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
Kings of the Angles have occurred on an island named Scani or Scandza (Scania), and according to William of Malmesbury ("Gesta regum Anglorum") he was later chosen as King of the Angles, reigning from Schleswig. His descendants became known as Scefings, or more usually Scyldings (after Sceldwea). The "Anglo-Saxon Chronicle" derives the royal lines of the Heptarchy from a common ancestor, Woden, a euhemerized version of the Germanic deity, and said to be a descendant of the aforementioned Sceaf. The senior line of this genealogy was that of Mercia, descended from the rulers of the Angles. The historical Anglo-Saxon invasion of Britain took place