This arch is formed by a pair of equal circles with a shoulder placed symmetrically between them. The geometry is shown in the following diagram:

A good example is the entrance to the Virgers’ Vestry in the South Transept.

This arch is formed by a pair of equal circles with a shoulder placed symmetrically between them. The geometry is shown in the following diagram:

A good example is the entrance to the Virgers’ Vestry in the South Transept.
