In fact eight major and minor triads can be obtained from each permutation of the scale.
As earlier suggested, the root written alone indicates a simple major triad.
It is formed by adding a 2nd to a major triad.
It can be also viewed as a major triad with an additional minor seventh.
Western music is based on major and minor triads.
When a chord has these three notes alone, it is called a major triad.
I wrote major triads, and many of my early works, although they sound thorny today, end in tonality.
The major triad has a root, a major third, and a fifth.
In all but their extreme high registers, these brass instruments are limited to the notes of the major triad.
The ending is a little pat (a big major triad and a final squeak).