Augmented triad

An augmented triad is a chord, made up of two major thirds (an augmented fifth). The term augmented triad arises from an augmented triad being considered a major chord whose top note (fifth) is raised. When using popular-music symbols, it is indicated by the symbol "+" or "aug". For example, the augmented triad built on C, written as C+, has pitches C–E–G:

augmented triad
Component intervals from root
augmented fifth
major third
Forte no. / Complement
3-12 / 9-12

The chord can be represented by the integer notation {0, 4, 8}.