Triads are often notated with the pitch name of the root of the chord followed by the type of triad. In the figure below, the first triad is a C major chord (also notated as CM, or CMaj). The second triad is a C minor chord (also notated as Cm, or Cmin). The third triad is a C augmented chord (also notated as Caug, or C+). The last triad is a C diminished chord (also notated as Cdim or Cº).
Click to hear Triad