Hanging chad, that's attached by a corner, swinging door chad, connected by two corners, and tri-chad that is attached by three corners.    From Wordnik.com.  [CNN Transcript - Special Event: What Have We Learned from Election 2000? - December 16, 2000] Reference

The tri-chad also is counted.    From Wordnik.com.  [CNN Transcript - CNN Late Edition: Battle for the White House Continues in Florida - November 12, 2000] Reference