Lune Millennium Bridge Lune Millennium Bridge The Lune Millennium Bridge is a cable-stayed footbridge which spans the River Lune in Lancaster, England. It was designed by Whitby Bird and Partners, and built at a cost of £1.8m to commemorate the millennium of 2000. The bridge forms a "Y"-shape in plan to connect one bank both to a viaduct and adjacent quay. Its double pylon seeks to act as a reminder of the masted ships which previously used the quay. It features a main gangway of just over 30 metres and masts around 40 metres tall. The bridge is part of the National Cycle
Lune of Hippocrates which the arc "AEB" lies. Consequently, the smaller circle has half the area of the larger circle, and therefore the quarter circle AFBOA is equal in area to the semicircle AEBDA. Subtracting the crescent-shaped area AFBDA from the quarter circle gives triangle ABO and subtracting the same crescent from the semicircle gives the lune. Since the triangle and lune are both formed by subtracting equal areas from equal area, they are themselves equal in area. Using a similar proof to the one above, Alhazen showed that two lunes, formed on the two sides of a right triangle, whose outer boundaries