Example 1
The first step in understanding triads and seventh chords is learning to identify major and minor thirds.
Question: Is this a major or minor third?

1. Count the half steps

2. Answer: It's a major third because the interval spans four half steps.
Example 2
The notes in a triad are termed the root, third and fifth. Recognizing which note is the root, third or fifth is essential to understanding chord inversions.
Question: Name the highlighted note. Root, third, fifth, or seventh.

1. Rearrange the notes of the chord to put it in root position.

Answer: It's the third.