what are the three types of pleats

Answer 1

http://blog.suitupp.com/2010/06/14/what-are-pleats-what-kind-of-pleats-are-there/

There seem to be more than three types.

Answer 2

This article describes several types of pleats.

http://en.wikipedia.org/wiki/Pleat#Types_of_pleats

Answer 3

the three types of pleat