Equilateral pentagon of δ can be seen from the figure: Simplifying, δ is obtained as function of α and β: The remaining angles of the pentagon can be found geometrically: The remaining angles of the orange and blue triangles are readily found by noting that two angles of an isosceles triangle are equal while all three angles sum to 180°. Then formula_7 and the two remaining angles of the green triangle can be found from four equations stating that the sum of the angles of the pentagon is 540°, the sum of the angles of the green triangle is 180°, the angle
Kings of the Angles such as Wihtlæg, who defeated and killed Amleth, King of the Jutes. Under Wermund the Angles' fortress at Schleswig is said to have been captured by a branch of the Saxons known as the Myrgings, but was retaken by Offa about whom many tales were told (and who is usually referred to as Offa of Angel to distinguish him from his supposed descendent Offa of Mercia). The legends give Offa as bride a daughter of Freawine, governor of Schleswig, and upon becoming king he is said to have secured the Angles' southern border with the Saxons along the River Eider.