The A Ionian mode (that's the same as the A major scale, remember ... building simple major and minor triads (three-note ...
Of course, not all triads have to be chords of C major or minor. You can use the process, of selecting the 1st (root), 3rd, ...
The major key and the minor key ... minor scales mean that triads based on these degrees of the scale make different kinds of chords. These chromatic alterations have been the basis of a whole ...