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
The Pentagon each wing was occupied as soon as it was completed, even as construction continued on the remaining wings. The Pentagon was designed in accordance with the racial segregation laws in force in the state of Virginia at the time, with separate eating and lavatory accommodations for white and black persons; the dining areas for black persons were in the basement. However, when Roosevelt visited the facility before its dedication, he ordered removal of the "Whites Only" signs, and the Pentagon became the only building in Virginia where segregation laws (which remained in force until 1965) were not enforced. The Pentagon