A chord is

• a group of sounds played or sung in sequence

• a group of sounds played or sung in fugal form

• a group of sounds played or sung simultaneously

A triad is

• a chord made on four sounds

• a chord made on three sounds

• a chord made on five sounds

The first degree of any scale is

• the mediant

• the dominant

• the tonic

• the leading note

The second degree of any scale is

• the submediant

• the subdominant

• the supertonic

• the leading note

The fifth degree of any scale is

• the mediant

• the dominant

• the tonic

• the leading note

The fourth degree of any scale is

• the submediant

• the subdominant

• the supertonic

• the leading note

The sixth degree of any scale is

• the submediant

• the subdominant

• the supertonic

• the leading note

The seventh degree of any scale is

• the mediant

• the dominant

• the tonic

• the leading note

A traditional triad is formed by

• the tonic, the submediant and the leading note

• the tonic, the mediant and the submediant

• the tonic the supertonic and the mediant

• the tonic, the mediant and the dominant

A major chord

• includes the tonic, a major third and a perfect fifth

• includes the tonic, a minor third and a perfect fifth

• includes the tonic, a augmented third and a perfect fifth