1) Cocked hat 2) Three-sided hat 3) Tricorn 1) Hat 2) Tricorn 
The tricorne or tricorn is a style of hat that was popular during the 18th century, falling out of style by 1800, though actually not called a `Tricorne` until the mid 1800s. During the 18th century hats of this general style were referred to as `Cocked Hats`. At the peak of its popularity, the Cocked Hat (tricorne) varried greatly in style an...
Men's hat of the 18th century wide brims were folded up to form three points.