In architecture fan tracery is the elaborate geometrical carved work, which spreads over the surface of a vaulting, rising from a Corbel and diverging like the folds of a fan. Fan-tracery vaulting is much used in the Perpendicular style, in which the vault is covered by ribs and veins of tracery, of which all the principal lines diverge from a point, as in Henry VII's chapel, at Westminster. Research Fan Tracery
 
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