Final answer:
To label a triad according to the problem, use the pen or text tool to write the appropriate letters or symbols that represent the notes of the chord.
Step-by-step explanation:
Triads are commonly used in music theory to identify three-note chords. In this context, the triad will consist of three different musical notes, typically represented by letters or symbols. Using the pen or text tool, you can label the triad by writing the appropriate letters or symbols that represent the notes of the chord. For example, if the triad consists of the notes A, C, and E, you can label it as 'ACE' or 'A-C-E'.